title: The smallpox legacy: a history of pediatric immunizations.
authors.forename: L
authors.initials: L
authors.lastname: Gregorio
mesh_terms: D002648:Child; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D012899:Smallpox / Q000266:history*; D012900:Smallpox Vaccine / Q000266:history*; D014611:Vaccination / Q000266:history*; D014944:World Health Organization / Q000266:history
chemical_list: D012900:Smallpox Vaccine