Researchers work to boost effectiveness of the flu vaccine

Vaccines intended to help the body to fight off the flu bug may actually give the bug an edge, researchers say.

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<p><a href="http://www.physorg.com/news163677287.html">Researchers work to boost effectiveness of the flu vaccine</a></p> <p>Vaccines intended to help the body to fight off the flu bug may actually give the bug an edge, researchers say.</p>