title: The origins of vaccinia virus - a brief comment.
authors.forename: P
authors.initials: P
authors.lastname: Razzell
mesh_terms: D000818:Animals; D015605:Cowpox / Q000266:history*; D006663:Historiography; D049711:History, Modern 1601-; D006801:Humans; D012899:Smallpox / Q000266:history*; D006113:United Kingdom; D014612:Vaccines / Q000266:history*
chemical_list: D014612:Vaccines