Bird flu vaccine could spread disease

Scientists in Britain say vaccinating poultry against the H5N1 strain of avian influenza could spread the disease faster if it is done badly.

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<p><a href="http://www.physorg.com/news75205763.html">Bird flu vaccine could spread disease</a></p> <p>Scientists in Britain say vaccinating poultry against the H5N1 strain of avian influenza could spread the disease faster if it is done badly. </p>