Are you looking for accurate, up-to-date information related to HPAI (bird flu) in dairy cattle? 

In response to the first positive milk test for highly pathogenic avian influenza (HPAI) in Wisconsin, the University of Wisconsin–Madison, Division of Extension has developed a centralized information-based webpage for Wisconsin dairy producers and the public. 

The centralized Extension webpage, available at https://go.wisc.edu/HPAI-resources, provides links to trusted state and federal guidance, biosecurity tools, and reporting information to help protect herd health and reduce the risk of HPAI spread. 

Extension serves as a statewide network, connecting producers and communities with university research, state and federal agencies, and trusted partners. Our role is to help direct people by providing science-based guidance, official recommendations, and practical tools during emerging animal health situations. 

Wisconsin’s detection of HPAI in a dairy herd reflects the state’s aggressive and proactive milk testing model, which began in May 2025. This enhanced surveillance approach, developed in coordination with state and federal partners, enabled early detection of the virus through routine milk testing. Early detection supports rapid response, limits spread and protects both animal and human health. 

The materials shared by Extension aim to support on-farm preparedness, herd monitoring, and compliance with federal and state animal health requirements. Producers are encouraged to watch for clinical signs of HPAI in dairy cattle, including reduced feed intake, sudden drops in milk production, and changes in manure consistency, and to report concerns promptly. 

Consumers should be aware that pasteurized milk is safe to drink, and the Centers for Disease Control and Prevention continues to consider the human health risk from HPAI to be low. 

Enhanced biosecurity remains one of the most effective tools for reducing the risk of disease introduction and spread. Producers are encouraged to review and implement recommended practices from trusted state and federal partners, including employee protocols, visitor management, and equipment sanitation. 

The goal of the UW–Madison Extension is to provide science-based, actionable information to help Wisconsin dairy producers protect animal health and support the state’s agricultural community.