title: Too early to declare H1N1 swine flu pandemic over, says WHO chief.
authors.forename: John
authors.initials: J
authors.lastname: Zarocostas
mesh_terms: D004196:Disease Outbreaks; D014943:Global Health; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology*