Bird flu is continuing to spread across the United States, infecting wild birds and backyard poultry. It's causing egg prices ...

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 sets of infections — and that it could continue to do so. It also suggests ...

Researchers are reporting mass die offs of wild birds and sea mammals due to bird flu. They're tracking the deaths to better understand the virus and how it might create a greater threat to humans.

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

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

Researchers have stressed that bird flu still poses a minimal risk to the general public, though that may change as the virus ...

Cows in Nevada have been infected with a strain of H5N1 bird flu different from the strain detected in all other herds to this point in the ongoing dairy outbreak. It's the same strain that killed a ...

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

Most of the bird flu cases reported so far in the U.S. have belonged to an influenza subtype known as HPAI H5N1. The newly ...