[Variola].
D004196:Disease Outbreaks / Q000266:history*; D049672:History, 19th Century; D006801:Humans; D012899:Smallpox / Q000266:history* / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000627:therapeutic use; D013557:Switzerland
D012900:Smallpox Vaccine
Variole.