Stalking the wild influenza.
D000818:Animals; D002642:Chick Embryo; D004196:Disease Outbreaks / Q000266:history; D004216:Distemper / Q000382:microbiology; D004285:Dogs; D005060:Europe; D005289:Ferrets; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049691:History, Medieval; D006801:Humans; D007251:Influenza, Human / Q000266:history* / Q000382:microbiology; D009975:Orthomyxoviridae / Q000302:isolation & purification; D014481:United States