The epidemiology and ecology of swine influenza as a zoonotic disease.
D000818:Animals; D006801:Humans; D009980:Influenza A virus; D007251:Influenza, Human / Q000209:etiology* / Q000382:microbiology; D009976:Orthomyxoviridae Infections / Q000382:microbiology / Q000635:transmission / Q000662:veterinary*; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology / Q000635:transmission*; D014481:United States; D015047:Zoonoses