title: Unrecognised spread of hepatitis-B antigen.
mesh_terms: D000818:Animals; D002353:Carrier State / Q000453:epidemiology*; D004199:Disease Vectors; D006387:Hemagglutination, Viral; D006509:Hepatitis B / Q000453:epidemiology*; D006510:Hepatitis B Antibodies; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D007313:Insecta; D007564:Japan; D012424:Rural Population
chemical_list: D006510:Hepatitis B Antibodies; D006511:Hepatitis B Antigens