title: Increasing virulence of bird flu threatens mammals.
authors.forename: Helen
authors.initials: H
authors.lastname: Pilcher
mesh_terms: D000818:Animals; D002645:Chickens / Q000821:virology*; D004372:Ducks / Q000821:virology; D019143:Evolution, Molecular; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control / Q000635:transmission* / Q000662:veterinary*; D008322:Mammals / Q000821:virology*; D051379:Mice; D009975:Orthomyxoviridae / Q000235:genetics / Q000472:pathogenicity* / Q000502:physiology; D014774:Virulence / Q000235:genetics / Q000502:physiology