title: Prevalence of hepatitis B surface antigen in blood donors and pregnant women from southern Kerala.
mesh_terms: D000293:Adolescent; D000328:Adult; D001782:Blood Donors; D002353:Carrier State / Q000453:epidemiology*; D002648:Child; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology*
chemical_list: D006514:Hepatitis B Surface Antigens