title: Hepatitis-B antigen in an isolated Indian population (Yanomama indians) Southern Venezuela.
abstract: A high frequency of Hepatitis-B antigen (7%) was found in apparently healthy Yanomama indians living in southern Venezuela. The prevalence in 24 different Yanomama villages varied between 0 and 30%, but only 3 of 938 serum samples showed presence of HB-Ab. The distribution of the HB-Ag was found to be significantly higher in males than in females.
mesh_terms: D001782:Blood Donors; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D007199:Indians, South American; D008297:Male; D011159:Population Surveillance; D014687:Venezuela
chemical_list: D006511:Hepatitis B Antigens