Questions and answers on swine flu

As the number of swine flu cases grows, so do the questions about how the virus is transmitted and what people can do to prevent it. Here are answers from interviews with doctors and from public-health Web sites.

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<p><a href="http://www.physorg.com/news160218868.html">Questions and answers on swine flu</a></p> <p> As the number of swine flu cases grows, so do the questions about how the virus is transmitted and what people can do to prevent it. Here are answers from interviews with doctors and from public-health Web sites.</p>