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Immunogenicity, reactogenicity and safety of two-dose versus three-dose (standard care) hepatitis B immunisation of healthy adolescents aged 11-15 years: a randomised controlled trial.

Author(s): Heron L, Selnikova O, Moiseieva A, Van Damme P, van der Wielen M, Levie K, Hoet B, Stoffel M

Affiliation(s): National Center for Immunisation Research and Surveillance of Vaccine Preventable Diseases, Childrens Hospital, Westmead, Australia.

Publication date & source: 2007-04-12, Vaccine., 25(15):2817-22. Epub 2006 Dec 29.

This trial assessed the immunogenicity, safety and reactogenicity of a two-dose hepatitis B immunisation regimen (thiomersal-free Engerix-B 20 microg HBsAg doses 6 months apart) compared to the standard three-dose vaccination regimen (preservative-free Engerix-B 10 microg HBsAg doses, 0, 1, 6 month dose schedule) in healthy adolescents aged 11-15 years. Subjects were randomly assigned (2:1 ratio) to one of the two regimens (258 to the two-dose [20 microg] and 126 to the three-dose [10 microg] regimen) (Study ID 103860/280). One month after the final vaccine dose, the seroprotection (anti-HBs >or=10mIU/ml) rate in the two-dose (20 microg) group (233/241 individuals -96.7% seroprotected) was non-inferior to the seroprotection rate in the three-dose (10 microg) group (111/113 individuals -98.2% seroprotected). Both regimens were shown to be safe and well tolerated. Two doses of Engerix-B (20 microg HBsAg) could be considered as an alternative to standard three-dose Engerix-B (10 microg HBsAg) immunisation for adolescents aged 11-15 years.

Page last updated: 2007-05-03

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