Immunization in times ancient and modern.
D003140:Communicable Disease Control / Q000266:history*; D004739:England; D005202:Asia, Eastern; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D007114:Immunization / Q000266:history*; D007878:Legislation as Topic; D012899:Smallpox / Q000266:history; D014421:Turkey