Smallpox outbreaks in two Brazilian villages: epidemiologic characteristics.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001938:Brazil; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D005191:Family Characteristics; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012423:Rural Health; D012899:Smallpox / Q000453:epidemiology* / Q000235:genetics / Q000517:prevention & control; D014611:Vaccination