Evaluation of the BNT162b2 Covid-19 Vaccine in Children 5 to 11 Years of Age.

Autor:	Walter EB; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Talaat KR; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Sabharwal C; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Gurtman A; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Lockhart S; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Paulsen GC; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Barnett ED; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Muñoz FM; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Maldonado Y; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Pahud BA; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Domachowske JB; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Simões EAF; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Sarwar UN; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Kitchin N; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Cunliffe L; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Rojo P; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Kuchar E; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Rämet M; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Munjal I; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Perez JL; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Frenck RW Jr; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Lagkadinou E; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Swanson KA; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Ma H; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Xu X; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Koury K; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Mather S; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Belanger TJ; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Cooper D; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Türeci Ö; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Dormitzer PR; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Şahin U; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Jansen KU; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.)., Gruber WC; From Duke Human Vaccine Institute, Durham, NC (E.B.W.); Johns Hopkins University, Baltimore (K.R.T.); Vaccine Research and Development, Pfizer, Pearl River (C.S., A.G., B.A.P., U.N.S., I.M., K.A.S., K.K., T.J.B., D.C., P.R.D., K.U.J., W.C.G.), and SUNY Upstate Medical University, Syracuse (J.B.D.) - both in New York; Vaccine Research and Development, Pfizer, Hurley, United Kingdom (S.L., N.K., L.C.); the Department of Pediatrics, University of Cincinnati College of Medicine and the Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati (G.C.P., R.W.F.); Boston Medical Center, Boston University School of Medicine, Boston (E.D.B.); Texas Children's Hospital, Baylor College of Medicine, Houston (F.M.M.); Stanford University School of Medicine, Palo Alto, CA (Y.M.); Children's Mercy Hospital, Kansas City, MO (B.A.P.); the University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (E.A.F.S.); Hospital Universitario 12 de Octubre, Madrid (P.R.); Medical University of Warsaw, Warsaw, Poland (E.K.); Tampere University Vaccine Research Center, Tampere, and PEDEGO Research Unit, University of Oulu, Oulu - both in Finland (M.R.); Vaccine Research and Development (J.L.P., H.M., X.X.), and Worldwide Safety, Safety Surveillance and Risk Management (S.M.), Pfizer, Collegeville, PA; and BioNTech, Mainz, Germany (E.L., Ö.T., U.Ş.).
Jazyk:	angličtina
Zdroj:	The New England journal of medicine [N Engl J Med] 2022 Jan 06; Vol. 386 (1), pp. 35-46. Date of Electronic Publication: 2021 Nov 09.
DOI:	10.1056/NEJMoa2116298
Abstrakt:	Background: Safe, effective vaccines against coronavirus disease 2019 (Covid-19) are urgently needed in children younger than 12 years of age. Methods: A phase 1, dose-finding study and an ongoing phase 2-3 randomized trial are being conducted to investigate the safety, immunogenicity, and efficacy of two doses of the BNT162b2 vaccine administered 21 days apart in children 6 months to 11 years of age. We present results for 5-to-11-year-old children. In the phase 2-3 trial, participants were randomly assigned in a 2:1 ratio to receive two doses of either the BNT162b2 vaccine at the dose level identified during the open-label phase 1 study or placebo. Immune responses 1 month after the second dose of BNT162b2 were immunologically bridged to those in 16-to-25-year-olds from the pivotal trial of two 30-μg doses of BNT162b2. Vaccine efficacy against Covid-19 at 7 days or more after the second dose was assessed. Results: During the phase 1 study, a total of 48 children 5 to 11 years of age received 10 μg, 20 μg, or 30 μg of the BNT162b2 vaccine (16 children at each dose level). On the basis of reactogenicity and immunogenicity, a dose level of 10 μg was selected for further study. In the phase 2-3 trial, a total of 2268 children were randomly assigned to receive the BNT162b2 vaccine (1517 children) or placebo (751 children). At data cutoff, the median follow-up was 2.3 months. In the 5-to-11-year-olds, as in other age groups, the BNT162b2 vaccine had a favorable safety profile. No vaccine-related serious adverse events were noted. One month after the second dose, the geometric mean ratio of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) neutralizing titers in 5-to-11-year-olds to those in 16-to-25-year-olds was 1.04 (95% confidence interval [CI], 0.93 to 1.18), a ratio meeting the prespecified immunogenicity success criterion (lower bound of two-sided 95% CI, >0.67; geometric mean ratio point estimate, ≥0.8). Covid-19 with onset 7 days or more after the second dose was reported in three recipients of the BNT162b2 vaccine and in 16 placebo recipients (vaccine efficacy, 90.7%; 95% CI, 67.7 to 98.3). Conclusions: A Covid-19 vaccination regimen consisting of two 10-μg doses of BNT162b2 administered 21 days apart was found to be safe, immunogenic, and efficacious in children 5 to 11 years of age. (Funded by BioNTech and Pfizer; ClinicalTrials.gov number, NCT04816643.). (Copyright © 2021 Massachusetts Medical Society.)
Databáze:	MEDLINE
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