New avian influenza case confirmed in Wisconsin

Map: USDA map of commercial flocks affected with H5N1 avian influenza as of 12/9/2025 A new case of highly pathogenic avian influenza has been confirmed in Wisconsin.  Department of Agriculture, Trade, and Consumer Protection officials say the new case affected 38 birds in a backyard flock in Marquette County.  It’s the first new case in […]

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