title: Epidemiologic investigation of a smallpox outbreak in a town reported to be "100 per cent vaccinated".
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001938:Brazil; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D004812:Epidemiologic Methods; D006801:Humans; D007223:Infant; D008875:Middle Aged; D011153:Population; D012899:Smallpox / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000627:therapeutic use; D014171:Transients and Migrants; D014611:Vaccination; D012901:Variola virus / Q000302:isolation & purification
chemical_list: D012900:Smallpox Vaccine