Influenza pandemics in perspective.
D000956:Antigens, Viral; D004196:Disease Outbreaks / Q000453:epidemiology*; D006801:Humans; D009980:Influenza A virus / Q000276:immunology / Q000472:pathogenicity; D007251:Influenza, Human / Q000453:epidemiology* / Q000401:mortality / Q000635:transmission; D009154:Mutation; D009515:New Jersey; D011995:Recombination, Genetic; D014481:United States; D014774:Virulence
D000956:Antigens, Viral