Smallpox and vaccination in early Singapore. I. (1819-1829).
D002648:Child; D049672:History, 19th Century; D006801:Humans; D012846:Singapore; D012899:Smallpox / Q000266:history*; D012900:Smallpox Vaccine / Q000266:history*; D014611:Vaccination / Q000266:history*
D012900:Smallpox Vaccine