Number of swine flu cases in the U.S. reaches 57 million

The Centers for Disease Control and Prevention says about 12,000 have died from H1N1 infection, far fewer than in a typical flu season. Other data suggest the pandemic is waning. An estimated 57 million Americans have contracted pandemic H1N1 influenza since the outbreak began last April, about 257,000 have been hospitalized with complications from it, and nearly 12,000 have died, according to estimates...

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