Takako Utsumi and Yoshihiko Yano and Maria Lucia Inge Lusida and Mochammad Amin and Soetjipto and Hak Hotta and Yoshitake Hayashi (2010) Serologic and Molecular Characteristics of Hepatitis B Virus among School Children in East Java, Indonesia. The American Journal of Tropical Medicine and Hygiene, 83 (1). pp. 189-193. ISSN 00029637

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Abstract

Universal childhood hepatitis B vaccination was introduced in Indonesia in 1997; by 2008, coverage was estimated to be 78%. This study aimed to investigate the serologic status and virologic characteristics of hepatitis B virus (HBV) among the children in East Java. A total of 229 healthy children born during 1994–1999 were enrolled in this study. Overall, 3.1% were positive for hepatitis B surface antigen (HBsAg) and 23.6% were positive for antibody to HBsAg (anti-HBs). HBV DNA was detected in 5 of 222 HBsAg-negative carriers, which were suggested to be cases of occult HBV infection. A single amino substitution (T126I) in the S region was frequently found. HBV infection remains endemic, and the prevalence of anti-HBs remains insufficient among children in East Java, Indonesia.

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