So far, the H5N1 virus isn't transmitted between people — but the CDC has found a mutation in a human case "concerning." ...

Here's what the latest research is saying about how it is spreading and how to keep yourself and your pets safe.

The CDC has revealed the red flags it is monitoring for that suggest that bird flu was about to become the world's next pandemic.

Amid a "concerning" new mutation in bird flu that may indicate the virus could begin to more easily infect humans, what are ...

A new mutation and the first severe case of H5N1 bird flu discovered in a human in Louisiana has raised concern among some ...

Keith Poulsen's jaw dropped when farmers showed him images on their cellphones at the World Dairy Expo in Wisconsin in ...

These symptoms can be mild or severe. Most recent cases of bird flu in the U.S. have caused pink eye and mild respiratory symptoms. Have any people in Michigan been infected? Two people in ...

Officials in Arizona this week said nearly a half-dozen animals including a cheetah and a mountain lion at a Phoenix-area zoo died and others are sick after being exposed to the bird flu.

Public health officials across the U.S. are closely monitoring the H5N1 bird flu virus, which is widespread in wild birds and has infected cattle and poultry — as well as a small number farm ...