Influenza zoo.
D000818:Animals; D001717:Birds; D002681:China; D004196:Disease Outbreaks; D004199:Disease Vectors; D004463:Ecology; D006801:Humans; D009980:Influenza A virus; D007251:Influenza, Human / Q000382:microbiology / Q000635:transmission*; D014586:USSR; D014907:Whales