Efficacy of the TMPRSS2 inhibitor camostat mesilate in patients hospitalized with Covid-19-a double-blind randomized controlled trial.

Autor: Gunst, Jesper D., Staerke, Nina B., Pahus, Marie H., Kristensen, Lena H., Bodilsen, Jacob, Lohse, Nicolai, Dalgaard, Lars S., Brønnum, Dorthe, Fröbert, Ole, Hønge, Bo, Johansen, Isik S., Monrad, Ida, Erikstrup, Christian, Rosendal, Regitze, Vilstrup, Emil, Mariager, Theis, Bove, Dorthe G., Offersen, Rasmus, Shakar, Shakil, Cajander, Sara, Jørgensen, Nis P., Sritharan, Sajitha S., Breining, Peter, Jespersen, Søren, Mortensen, Klaus L., Jensen, Mads L., Kolte, Lilian, Frattari, Giacomo S., Larsen, Carsten S., Storgaard, Merete, Nielsen, Lars P., Tolstrup, Martin, Sædder, Eva A., Østergaard, Lars J., Ngo, Hien T.T., Jensen, Morten H., Højen, Jesper F., Kjolby, Mads, Søgaard, Ole S.

Publikováno v: In EClinicalMedicine May 2021 35

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
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Camostat mesylate against SARS‐CoV‐2 and COVID‐19—Rationale, dosing and safety.

Autor: Breining, Peter, Frølund, Anne Lier, Højen, Jesper Falkesgaard, Gunst, Jesper Damsgaard, Staerke, Nina B., Saedder, Eva, Cases‐Thomas, Manuel, Little, Paul, Nielsen, Lars Peter, Søgaard, Ole S., Kjolby, Mads

Publikováno v: Basic & Clinical Pharmacology & Toxicology; Feb2021, Vol. 128 Issue 2, p204-212, 9p

Bivalent Prefusion F Vaccine in Pregnancy to Prevent RSV Illness in Infants.

Autor: Kampmann B; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Madhi SA; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Munjal I; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Simões EAF; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Pahud BA; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Llapur C; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Baker J; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Pérez Marc G; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Radley D; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Shittu E; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Glanternik J; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Snaggs H; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Baber J; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Zachariah P; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Barnabas SL; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Fausett M; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Adam T; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Perreras N; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Van Houten MA; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Kantele A; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Huang LM; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Bont LJ; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Otsuki T; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Vargas SL; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Gullam J; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Tapiero B; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Stein RT; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Polack FP; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Zar HJ; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Staerke NB; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Duron Padilla M; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Richmond PC; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Koury K; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Schneider K; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Kalinina EV; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Cooper D; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Jansen KU; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Anderson AS; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Swanson KA; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Gruber WC; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.)., Gurtman A; From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Publikováno v: The New England journal of medicine [N Engl J Med] 2023 Apr 20; Vol. 388 (16), pp. 1451-1464. Date of Electronic Publication: 2023 Apr 05.