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" It&amp;#039;s far from perfect, but according to a paper published today in the New England Journal of Medicine, researchers found that an experimental vaccine provided protection from H5N1\u2014avian flu\u2014in slightly more than half of healthy adults. That&amp;#039;s not good enough to stop people from worrying about a flu pandemic, but it&amp;#039;s progress. The vaccine was administered in a number of different doses; only when the volunteers were given two hefty shots did the vaccine prove effective. How do they know it worked? No, the researchers didn&amp;#039;t lock the volunteers up in a henhouse with sick birds; they tested serum samples. Here&amp;#039;s some background on avian flu, and more on how doctors are racing to perfect a vaccine. --Jerry Beilinson "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/science/health/a535/2552366/>