At least four cattle herds in Nevada have tested positive for a strain of H5N1 bird flu never before seen in cows, state ...

Nearly 119,000 birds have been culled at a farm in California after a bird flu called H5N9 was detected among the poultry ...

The finding indicates that the virus, known as H5N1, has spilled from birds into cows at least twice — leading to these two ...

Legislation intended to aid the state’s response to highly-pathogenic avian influenza, or bird flu, passed the Senate ...

What you need to know about bird flu. Public health experts are closely watching avian influenza, which has affected chickens ...

Bird flu has decimated poultry flocks and infected cattle herds. The risk to humans is currently low, but that could easily ...

The highly contagious bird flu has hit Montgomery County, Maryland, where officials say a backyard flock of chickens tested ...

State officials say the highly pathogenic avian influenza – more commonly known as bird flu – is widespread in much of the ...

A version of the avian influenza virus different from the one rampaging through herds since last spring has been detected in dairy cows in Nevada, USDA says.

H5N1 continues to devastate egg-laying chickens in the U.S. But experts say eggs are safe to eat, especially if you cook them properly.

While it's tragic and alarming to see a massive die-off, it's not uncommon for birds that travel in such large populations.