H5N1 Bird Flu links for Wisconsin Farmers

Apr 10, 2025

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).

Highly Pathogenic Avian Influenza (H5N1) in Dairy Cattle

Information from the State of Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP):

https://datcp.wi.gov/Pages/Programs_Services/AvianInfluenzaCattle.aspx

Avian Influenza (Bird Flu)

Information from the U.S. Centers for Disease Control and Prevention:

https://www.cdc.gov/bird-flu/

H5N1 in Dairy Cattle

Information from the the National Milk Producers Federation (NMPF):

https://www.nmpf.org/resources/hpai/

Video: Evidence-Based PRRS Elimination Methods - Dr. Brent Pepin

In this episode of The Swine it Podcast Show, Dr. Brent Pepin, Director of Swine Health at the National Pork Board, explains how a systematic review of porcine reproductive and respiratory syndrome virus elimination methods is helping shape future herd health strategies. He discusses evidence-based farm and regional approaches, research gaps, and practical guidance to support informed decision-making across the swine industry. Listen now on all major platforms!

Click here to learn more: https://porkcheckoff.org/research/sys...

"Disease status sharing gives producers the opportunity to make real-time decisions that reduce PRRS prevalence and protect regions from new exposure."

Meet the guest: Dr. Brent Pepin / brent-pepin-dvm-ms-7988066b is Director of Swine Health at the National Pork Board. After earning his DVM and M.S. from Iowa State University, he built extensive experience in swine veterinary practice, research, and herd health management. His current work focuses on disease control, traceability, and improving herd health across the U.S. swine industry. Listen to Brent Pepin on The Swine it Podcast Show, available on all major platforms.