The ?Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) has identified a case of highly pathogenic avian influenza (HPAI H5N1) in a commercial poultry flock in Barron County.

DATCP and the U.S. Department of Agriculture (USDA) animal health officials are working together in a joint incident response. The affected premises will not move poultry or poultry products, and birds on the property will be depopulated to prevent the spread of the disease. Birds from the flock will not enter the food system.

The H5N1 HPAI virus has continued to circulate in both wild and domestic birds in North America since December 2021. H5N1 HPAI viruses are highly contagious and often fatal to domestic poultry. Caused by influenza type A viruses, the disease varies in severity depending on the strain and species affected. The disease can be spread by contact with infected birds, commingling with wild birds or their droppings, equipment, or clothing worn by anyone working with the animals.