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

A CDC study has found H5N1 bird flu antibodies in veterinarians who had no symptoms and no knowledge they had been working ...

The report is the latest evidence that the outbreak in dairy herds is spreading undetected in cows, and the spillover into ...

The patient was experiencing "flu-like symptoms" and had "health conditions that can make people more vulnerable to illness," ...

Avian influenza is continuing to plague poultry and dairy farming operations, and with the virus spreading across the country ...

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 ...

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 ...

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

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 ...

More Americans may have had bird flu without suffering any symptoms, a new study finds. That could allow the virus to mutate into something more dangerous.

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 first human case of bird flu in Nevada was caught by a dairy worker earlier this week, marking it the state's first human ...