H5N1 avian influenza continues to spread amid commercial and backyard poultry, and additional cases have been reported in domestic cats ...

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.

A local raptor expert is concerned about what a suspected uptick in bird flu cases in waterfowl could mean for other birds higher up the food chain.

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.