title: Smallpox eradication.
mesh_terms: D003140:Communicable Disease Control / Q000379:methods; D006801:Humans; D011159:Population Surveillance; D012899:Smallpox / Q000517:prevention & control*; D012900:Smallpox Vaccine / Q000627:therapeutic use*; D014944:World Health Organization
chemical_list: D012900:Smallpox Vaccine