With the purpose to investigate the acute condition of carrier of HRs-Ag and anti-HBs in Nepal, questionnaires, liverfuction tests and analises of HBs-Ag and anti-HBs, were performed in 154 subjects who lived in the city of Kathmandu and town of Pokhara, villages of Beni, Babychour, Darapani, Khivang and Muri and 31 members of Sherpa, The incidence of HBs-Ag in sera assayed by the methode of RIA and IAHA were 7.02% and 7.0%, respectively, whereas that of anti-HBs in the sera measured by RIA and PHA were 44.8% and 43.2%. These data suggested that about a half of the peaple examined was invaded by HB virus.
Although the carriers of HBs-Ag appeared in highest frequency between 10 and 20 years of age, but the occurence of anti-HBs seemed to be more dominant after 40 years old. The incidence of the carriers of HBs-Ag in a group with normal liver function was about 8%, whereas in a group with abnormal liver function it increased up to 11.7%, On the other hand, 26% of the carriers of HBs-Ag, 26.9% of the cases with anti-HBs, and 23.9% of the cases without HBs-Ag and anti-HBs showed abnormalities of the liverfuction tests.
In 12 cases, adw subtype of HBs-Ag was dermonstrated in 3 cases of Sherpa tribe, 3 cases of Tibet tribe, 1 case of Chetri tribe, and in 1 case of Gurung tribe, whereas adr subtype was found in only 1 casa of Newar tribe. There was no case showing of ayw in this study.
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