Bird flu found in commercial chicken flock

The U.S. Department of Agriculture on Monday confirmed the first case of a lethal strain of bird flu in a commercial chicken flock, widening the impact of a virus that has already killed hundreds of thousands of turkeys this year. The H5N2 flu strain infected a commercial flock of 200,000 chickens in Jefferson County, Wisconsin, between Madison and Milwaukee, according to the USDA.

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