Swine Flu Infects 22 Million, Kills 3,900 in U.S. (Update2)

Nov. 12 (Bloomberg) -- Swine flu cases in the U.S. are rising at the fastest pace for influenza in four decades, infecting 22 million people and killing 3,900 in the first six months of the pandemic, according to revised estimates from the Centers for Disease Control and Prevention.

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