The progression of the species-jumping disease has been unprecedented, including the first-ever U.S. cases of infections in ...

The disease is circulating, but experts say you're only at risk if you work directly with birds or in agriculture.

First U.S. detection of virulent H5N9 strain, at a California duck farm, draws scrutiny as evidence of genetic reassortment ...

This colorized electron microscope image released by the National Institute of ... (CDC/NIAID via AP, File) ATLANTA (AP) — ...

The recent rise in egg prices is being linked to the ongoing spread of bird flu, a virus primarily affecting chickens and other poultry.