Avian influenza, also known as bird flu and influenza A (H5N1), has been detected in a backyard poultry flock in Yolo County, according to the Yolo County Health and Human ...

Avian influenza, H5N1, had been detected in wild birds in Yolo County since 2022 but never before in a backyard poultry flock, according to a Thursday news release from county officials. Two people ...

A number of bird flu cases have been reported in the Chicago area in recent weeks, leading to many questions about how quickly the virus is spreading and how worried residents should be.

Egg prices are up nearly 37 percent, as the highly contagious bird flu devastates U.S. flocks. Here's what to know.

President Trump announced he's pulling the U.S. from the WHO. Now researchers are scrambling to understand what that means for the H5N1 bird flu pandemic.