Smallpox in London: factors in the decline of the disease in the nineteenth century.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000266:history; D004739:England; D049671:History, 18th Century; D049672:History, 19th Century; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008131:London; D008875:Middle Aged; D012899:Smallpox / Q000266:history*; D012901:Variola virus / Q000472:pathogenicity; D014852:Wales