The virus in the first severe human bird flu case in the U.S. was found to have mutated. Newsweek's live blog is closed.

Bird flu is more difficult to detect in poultry, but can sometimes show clinical signs. An infected flock might show signs of ...

They estimate more than 125 million birds are affected with bird flu in the U.S. The latest U.S. outbreak started in 2022. As of December ... Current avian flu map The CDC publishes a summary ...

California's Gov. Gavin Newsom declared a State of Emergency in response to the growing threat of the Avian influenza A (H5N1 ...

U.S. wholesale egg prices are shattering records as an accelerating outbreak of bird flu in laying hens slashes supplies ...