title: Could smallpox come back?
authors.forename: R
authors.initials: R
authors.lastname: Wittek
mesh_terms: D023482:Bioterrorism; D004196:Disease Outbreaks / Q000517:prevention & control; D014943:Global Health; D006801:Humans; D012899:Smallpox / Q000191:economics / Q000453:epidemiology*; D012901:Variola virus