Wisconsin confirms bird flu in backyard flock, birds euthanized
Wisconsin officials confirmed a case of highly pathogenic avian influenza (HPAI) in a backyard poultry flock in Rusk County, according to the Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP). The agency announced the confirmation on Thursday, November 12, 2026.
Officials did not specify how the flock became infected. DATCP said all birds on the property were euthanized and will not enter the food system.
HPAI is a highly contagious virus that is often fatal to domestic poultry. According to DATCP, it has circulated among wild and domestic birds in North America since December 2021. The disease is caused by influenza type A viruses and can vary in severity depending on the strain and affected species.
The virus can spread through contact with infected birds, wild birds or their droppings, as well as contaminated equipment or clothing worn by people working with the animals, according to DATCP.
When HPAI is confirmed in a backyard poultry flock, officials may establish a 10-kilometer surveillance zone, though surrounding poultry premises would not face movement restrictions.
DATCP urged livestock owners to take precautions to protect their flocks and herds, including washing hands, disinfecting equipment, restricting access to animals and separating new additions for at least 30 days. The agency also recommended that poultry owners keep their birds indoors when possible.
Fox News reported the story on November 13, 2026, at 12:20am EST. Mezha also reported the story on Friday, November 13, 2026, at 07:33, citing Fox News.
