title: Swine flu pandemic announced.
mesh_terms: D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D014943:Global Health; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology*; D033181:Information Dissemination; D020407:Internet