A Washington state resident has tested positive for bird flu, marking the first human case in the U.S. in nine months, and ...

After a summer lull in U.S. cases of avian influenza in both poultry and dairy cattle—and no human infections reported in the country since February—the virus is back. The currently circulating ...

It was a quiet summer for bird flu: Egg prices fell a bit, fewer sick poultry flocks were culled on farms, and officials took a breath. “It was lovely,” said Shauna Voss, the assistant director of ...

After the H5N1 virus hit the remote island of South Georgia in 2023, more than 50,000 breeding females may have disappeared.

Migrating wild birds are spreading the virus to domesticated flocks, increasing the risk of eventually seeing a human ...