title: Yellow fever in west Africa: a retrospective glance.
authors.forename: J S
authors.initials: JS
authors.lastname: Porterfield
mesh_terms: D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009549:Nigeria; D015004:Yellow Fever / Q000266:history* / Q000635:transmission