title: The persistence of smallpox in remote unvaccinated villages during eradication program activities.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003140:Communicable Disease Control; D004197:Disease Reservoirs; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008302:Mali; D008875:Middle Aged; D012899:Smallpox / Q000276:immunology*; D012900:Smallpox Vaccine; D014611:Vaccination
chemical_list: D012900:Smallpox Vaccine