On February 5, the US Department of Agriculture said dairy cattle in the United States had tested positive for a particular strain of bird flu that was not previously found in cows.

The virus is spreading with greater speed among animals, with transmission to humans increasing. But risk to the general ...

Amid rising respiratory illnesses, a CDC report reveals undetected bird flu cases in US veterinarians. The spread, shown ...

Yahoo News provides the latest updates on the spread of bird flu in the U.S. and its effect on rising egg prices and ...

Bird flu infects many species, including wild animals, according to the United Nations. Ducks, quail and at least one eagle ...

Sonya Stokes, M.D., an emergency room physician in the San Francisco Bay Area, braces herself for a daily deluge of patients ...

With so much H5N1 circulating in the U.S., scientists worry we are a few mutations away from a potential human pandemic.

Bird flu continues to spread to farm animals, raising concerns about whether it's safe to drink milk or eat beef, eggs, and ...