Avian influenza A (H5N1) has mutated, so the symptoms of bird flu could change as more people get sick in 2025.

The widening U.S. bird flu outbreak has made its way to Maryland, which has counted two cases on commercial poultry farms—one ...

Wayne County has its first confirmed case of the highly pathogenic avian influenza, state officials reported Friday. The ...

CDC officials say they extended the guidance now because they are seeing more H5N1 patients whose illness they cannot track ...

California is in a state of emergency due to a recent bird flu outbreak. As residents grapple with the news, many are learning more about the virus — how to look for signs and symptoms and where ...