Searching for smallpox.
D000349:Africa; D004196:Disease Outbreaks; D006801:Humans; D007194:India; D012899:Smallpox / Q000453:epidemiology* / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000008:administration & dosage; D012959:Socioeconomic Factors; D014944:World Health Organization
D012900:Smallpox Vaccine