Swine flue outbreak. Swine flu names evolving faster than swine flu itself.
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D002487:Centers for Disease Control and Prevention, U.S.; D004196:Disease Outbreaks; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000145:classification*; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology; D009626:Terminology as Topic; D014481:United States; D014944:World Health Organization