Immunogenicity and safety of monovalent p1.7(h),4 meningococcal outer membrane vesicle vaccine in toddlers: comparison of two vaccination schedules and two vaccine formulations.

Autor: de Kleijn ED; Department of Pediatrics, University Hospital Rotterdam/Sophia Children's Hospital, Dr Molewaterplein 60, 3015 GJ, Rotterdam, The Netherlands., de Groot R, Lafeber AB, Labadie J, van Limpt KC, Visser J, Berbers GA, van Alphen L, Rümke HC
Jazyk: angličtina
Zdroj: Vaccine [Vaccine] 2000 Dec 08; Vol. 19 (9-10), pp. 1141-8.
DOI: 10.1016/s0264-410x(00)00320-0
Abstrakt: The safety and immunogenicity of two PorA-based meningococcal outer membrane vesicle (OMV) vaccines against the P1.4 serosubtype adsorbed with AlPO(4) or Al(OH)(3) were studied in 134 toddlers. Vaccinations were given three times with an interval of 3-6 weeks or twice with an interval of 6-10 weeks. A vaccination was repeated after 20-40 weeks. Pre- and post-immunization sera were tested for bactericidal activity against an isogenic strain expressing P1.7(h), 4 PorA. Both meningococcal OMV vaccines were well tolerated. The percentage of children with a fourfold increase in bactericidal activity was 96% (AlPO(4)-adjuvated vaccine/2+1 schedule), 100% (AlPO(4)-adjuvated vaccine/3+1 schedule), 93% (Al(OH)(3)-adjuvated vaccine/2+1 schedule) and 97% (Al(OH)(3)-adjuvated vaccine/3+1 schedule). Adsorption with AlPO(4) makes the OMV vaccine more immunogenic than adsorption with Al(OH)(3). Bactericidal activity was highest after the 3+1 schedule, although the response shortly after the primary series was higher in the two-dose priming group.
Databáze: MEDLINE