Bird flu is widespread in wild birds worldwide and is causing outbreaks in poultry and dairy cows with several recent human ...

Until last week, all bird flu in dairy herds had been identified as the B3.13 variant, which was believed to have come from ...

The new H5N1 version, known as D1.1, was found in dairy cattle in Nevada and is different than the B3.13 type that has spread ...

The discovery of bird flu in the San Mateo backyard flock prompted health officials to remind people to take biosecurity ...

When it comes to the potential of H5N1 avian flu, otherwise known as bird flu, picking up mutations that may lead to human-to ...

A new variant of the H5N1 bird flu — the same one that led to the death of a Louisiana man — has for first the first time ...

A branch of the H5N1 bird flu family tree that hadn't previously been seen in cattle has now been detected in dairy cows.

Dairy cattle in Nevada have been infected with a new type of bird flu that's different from the version that has spread in ...

The data, which appeared fleetingly online on Wednesday, confirmed transmission in two households. Scientists called on the ...

REDWOOD CITY — A stray cat in San Mateo County recently tested positive for bird flu, officials said Thursday. The case is ...

Experts said the discovery raises questions about how widely the virus has spread, and underscores the difficulty of ...

As bird flu continues to spread across the United States, questions have emerged about the risk of contracting the virus from ...