Swine Flu Vaccine Effective for Adults

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VOA's Carol Pearson reports on vaccines to fight the H1N1 pandemic.
Duration - 01:24
1252 points | Advanced
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Comments

    Archived Comments

    • Pumpkin posted on July 11, 2010 7:49:05 PM

      惊，我以前都没听说过这个哎~

    • monje posted on May 27, 2010 5:22:59 PM

      what's the problem?

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