[Smallpox vaccination].
D000349:Africa; D000818:Animals; D001208:Asia; D002417:Cattle; D005060:Europe; D006801:Humans; D012899:Smallpox / Q000453:epidemiology; D012900:Smallpox Vaccine / Q000009:adverse effects; D013020:South America; D014611:Vaccination; D014944:World Health Organization
D012900:Smallpox Vaccine