title: Announcement: Fifty Years of Global Immunization at CDC - 1966-2015.
mesh_terms: D000846:Anniversaries and Special Events; D002487:Centers for Disease Control and Prevention, U.S.; D060740:Disease Eradication; D014943:Global Health; D006801:Humans; D017589:Immunization Programs; D012899:Smallpox / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000008:administration & dosage; D014481:United States
chemical_list: D012900:Smallpox Vaccine