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| - Hepatitis-B virus infection in children and adults in Northern Nigeria: a preliminary survey
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| - Abstract. Hepatitis-B surface antigen (HBsAg) and its corresponding antibody (anti-HBs) have been detected by radio-immunoassay in children and adults and in adult expatriates in Zaria, Northern Nigeria. The exposure rate to hepatitis-B virus (frequency of HBsAg and anti-Hbs) was found to vary from 59% in children under five years to 72·5% in adults over 30 years of age, while the frequency of HBsAg alone was 40% and 10% respectively. The anti-HBs prevalence rates rose progressively with age and reached a peak at 62·5% in adults. Five of 32 adult expatriates (15·6%) were positive for anti-HBs. The factors contributing to the high exposure rate in the indigenous population in this region require further study to enable judicious use to be made of preventive measures.
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