Article
Analysis of hepatitis B surface antigen mutations in Mongolia: molecular epidemiology and implications for mass vaccination.
Archives of virology - 1 Jan 2007
Davaalkham D, Ojima T, Uehara R, Watanabe M, Oki I, Endo K, Takahashi M, Okamoto H, Nakamura Y
Abstract excerpt
Although the potential significance of hepatitis B surface antigen (HBsAg) mutants for failure of immunization has been studied in some endemic countries, whether the "a" determinant variants are responsible for vaccine failure in Mongolia remains unknown. Fifty-nine HBsAg-positive children (age: 8.8 +/- 0.9 years) who had been observed during the nationwide survey of vaccinated cohorts conducted in 2004 were...
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