The findings show how the H5N1 bird flu virus is evolving in livestock and what that may mean for human health.

A second type of bird flu has been found in U.S. dairy cows for the first time, the U.S. Department of Agriculture (USDA) announced on Wednesday. Until recently, all dairy herd detections in the U.S.

The highly pathogenic bird flu virus that has surfaced in a Wisconsin dairy herd is not a lingering ember from earlier outbreaks in cattle. It is a fresh jump from wildlife into livestock, a new ...

Sudden drop in milk production, thickened milk, and cows under movement restrictions. Since 2024, American farmers have had bitter experiences with the feared bird flu (H5N1), which in several cases ...

DES MOINES — The U.S. Department of Agriculture has sent a “strike team” to Iowa to assist it with testing after the highly contagious bird flu usually associated with poultry flocks now has been ...

Since it was first detected in the United States in 2014, H5N1 avian influenza, commonly known as bird flu, has jumped from wild birds to farm animals and then to people, causing more than 70 human ...