Bird Flu Strikes Duck Farms in Vietnam

Vietnamese authorities say the H5N1 strain of bird flu has struck farms in four provinces in Vietnam, killing almost 2,000 unvaccinated ducks.

Authorities said Tuesday the virus has been found in the three northern provinces of Son La, Quang Ninh, Nam Dinh and in the country's southern Mekong Delta province of Can Tho.

Nearly 6,000 birds have been culled.

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