Since it was first detected in the U.S. in 2014, H5N1 avian influenza, commonly known as bird flu, has jumped from wild birds ...

A massive group of dead waterfowl that washed up along the southern shores of Lake Michigan near Chicago and its northern suburbs is believed to be linked to the ongoing bird flu outbreak, wildlife ...

A new nasal spray vaccine could stop bird flu at the door — blocking infection, reducing spread, and helping head off the next pandemic.