RACINE, Wis. — A case of highly pathogenic avian influenza has been identified in a backyard poultry flock in Racine County, the Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) announced Monday.

Birds at the affected site were depopulated to prevent the spread of the disease after the case was confirmed.

HPAI H5N1 viruses are highly contagious and often fatal to domestic poultry, according to DATCP. The disease varies in severity depending on the strain and species affected and can spread through contact with infected birds, commingling with wild birds or their droppings, equipment, or clothing worn by anyone working with the animals.

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