San Mateo County public health officials reported finding H5N1 bird flu in a pet cat and a backyard poultry flock.

Low vaccination rates may be contributing to the spread of flu, but data suggests the number of cases so far this season is ...

The United States is seeing a second peak in flu cases this season. After doctor's office visits for flu dipped early this ...

An expert shares everything to know about bird flu from risks, transmission, symptoms and prevention, as well as the key ...