AGE-SPECIFIC PREVALENCE OF HEPATITIS A VIRUS ANTIBODY IN THAILAND1

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Abstract
Burke, D. S., R. Snitbhan, D. E. Johnson and R. McN. Scott (AFRIMS, APO San Francisco 96346). Age-specific prevalence of hepatitis A virus antibody In Thailand. Am J Epidemiol 1981; 113: 245–9. Serum specimens drawn at random from three geographically defined populations of healthy Thais were tested for antibody to the hepatitis A virus (anti-HAV) by radlolmmunoassay. A total of 746 specimens were tested. The age by which 50 per cent were antibody positive was 4–5 years for residents of an urban Bangkok housing project, 8–9 years for rural villagers, and 10–11 years for urban Bangkok government school pupils. Overall, specimens from 97 per cent of Thal adults 16 years of age or older were anti-HAV positive. These data suggest widespread distribution of HAV in Thailand.

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