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 ...

A new strain of avian flu, H5N1, has spread to dairy cows and domestic cats in the U.S., with a dairy worker in Nevada ...

Bird flu remains a growing problem across the U.S., and many of us have questions about how serious it is and how worried we ...

Both the Finnish and the U.S. bird flu vaccines are made by CSL Seqirus but are different vaccines. In the summer, U.S. officials stockpiled 4.8 million doses of the vaccine that officials said was ...

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