Highly pathogenic avian influenza (HPAI) H5N1 is a virus that has traditionally affected birds. Recently, however, it has been confirmed in dairy cattle and detected in other species, including humans. This marks a significant and unprecedented development for the dairy industry.

The emergence of HPAI H5N1 in cattle highlights the urgent need for a One Health approach, which recognizes the close connections between human, animal, and environmental health. As the situation evolves, it’s critical to strengthen biosecurity practices, enhance surveillance efforts, and support research to better understand how the virus spreads and how to manage it.

Because this is a rapidly changing situation, we encourage dairy producers and industry professionals to stay informed. For the most up-to-date and reliable information, follow guidance from the Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP), the Centers for Disease Control and Prevention (CDC), and the National Milk Producers Federation (NMPF).