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

Yolo County officials confirmed on Thursday the presence of the highly contagious bird flu known as H5N1 in a backyard poultry flock.

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.

Early this month, the state health department announced that a person in Louisiana died from the bird flu, also known as H5N1.