A/H1N1 influenza virus passes to birds.
D000818:Animals; D001717:Birds; D002677:Chile / Q000453:epidemiology; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D005585:Influenza in Birds / Q000453:epidemiology / Q000635:transmission*; D007251:Influenza, Human / Q000453:epidemiology / Q000635:transmission*; D014422:Turkeys; D015047:Zoonoses