Hepatitis B vaccine effectiveness in the face of global HBV genotype diversity

Recombinant hepatitis B vaccines are of the A2 genotype; one of ten known genotypes whose distribution varies globally. Reports of rare HBV infections in blood donors with an imbalance of non-A2 genotype HBV in vaccinated subjects have raised questions about the cross-protection afforded by HBV-A2 v...

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Bibliographic Details
Published inExpert review of vaccines Vol. 10; no. 12; pp. 1709 - 1715
Main Authors Cassidy, Adrian, Mossman, Sally, Olivieri, Antonio, Ridder, Marc De, Leroux-Roels, Geert
Format Journal Article
LanguageEnglish
Published England Taylor & Francis 01.12.2011
Expert Reviews Ltd
Informa Healthcare
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Summary:Recombinant hepatitis B vaccines are of the A2 genotype; one of ten known genotypes whose distribution varies globally. Reports of rare HBV infections in blood donors with an imbalance of non-A2 genotype HBV in vaccinated subjects have raised questions about the cross-protection afforded by HBV-A2 vaccines. Infections in HBV vaccinees were asymptomatic and transient, indicating that vaccination prevented clinical disease. Preclinical data demonstrate cross-reactivity and cross-protection by A2 vaccines against non-A2 HBV genotypes. Substantial improvements in HBV control have been demonstrated in countries with diverse genotype distribution that have introduced universal childhood HBV vaccination programs. Available data show that current HBV-A2 vaccines are highly effective in preventing infections and clinical disease caused by all known HBV genotypes.
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ISSN:1476-0584
1744-8395
1744-8395
DOI:10.1586/erv.11.151