New Details Emerge on Swine Flu

The U.S. Centers for Disease Control and Prevention has published new details about swine flu cases in the United States. The Morbidity and Mortality Weekly Report (MMWR) dispatch supports earlier evidence that the virus spreads from human to human, adding six cases to the two discovered earlier. The six cases were revealed at a press conference on Friday, 24 April, but the MMWR offers more specifics about each case.

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