Researchers are reporting mass die offs of wild birds and sea mammals due to bird flu. They're tracking the deaths to better understand the virus and how it might create a greater threat to humans.

A version of the avian influenza virus different from the one rampaging through herds since last spring has been detected in ...

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

Six dairy herds in Nevada have tested positive for a newer strain of the H5N1 bird flu virus that’s been associated with ...

Nearly 119,000 birds have been culled at a farm in California after a bird flu called H5N9 was detected among the poultry ...

A second type of bird flu has been found in U.S. dairy cows for the first time, the U.S. Department of Agriculture (USDA) announced on Wednesday. Until recently, all dairy herds in the U.S. had been ...

The USDA said four Nevada dairy herds were infected with an H5N1 bird flu strain that has circulated in wild birds, making ...

Bird flu has decimated poultry flocks and infected cattle herds. The risk to humans is currently low, but that could easily ...

According to the Centers for Disease Control and Prevention (CDC), there have been 67 confirmed human cases of H5N1 bird flu ...

Waterfowl birds and their predators are especially at risk of contracting H5N1. Massachusetts has not yet reported a human ...

While the virus hasn’t made a sustained leap into humans, vaccines and treatments are being developed ahead of an outbreak.

A Massachusetts biopharma giant is at the center of preparations already underway if bird flu mutates and begins to find ...