U.S. bird experts mystified by Midwest avian flu spread

March 13, 2015 8:27 PM

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CHICAGO (Reuters) - A virulent strain of avian flu that has killed turkeys in the heart of the nation's poultry region has been found through molecular testing to be nearly identical to viruses isolated in migratory ducks.

But some wildlife experts are skeptical of suggestions that wild birds are responsible for spreading the H5N2 flu strain that has infected poultry in Minnesota, Missouri and Arkansas.

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