title: A threatening influenza pandemic.
mesh_terms: D023482:Bioterrorism; D004196:Disease Outbreaks / Q000517:prevention & control*; D006801:Humans; D009980:Influenza A virus; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*; D007391:International Cooperation; D014944:World Health Organization