title: Ecology of influenza viruses in lower mammals and birds.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000235:genetics; D001717:Birds / Q000382:microbiology*; D004196:Disease Outbreaks / Q000453:epidemiology; D004372:Ducks / Q000382:microbiology; D004463:Ecology; D014644:Genetic Variation; D006801:Humans; D009980:Influenza A virus / Q000235:genetics / Q000276:immunology / Q000502:physiology*; D007251:Influenza, Human / Q000453:epidemiology; D008322:Mammals / Q000382:microbiology*; D013552:Swine / Q000382:microbiology
chemical_list: D000956:Antigens, Viral