A little-known variant of bird flu has evolved to become better adapted to infecting people and could pose a pandemic threat to humans, a team of researchers has warned.

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 herd detections in the U.S.

Almost a year ago, the H5N1 strain of bird flu was discovered in dairy cows for the first time. Since then, there have been confirmed cases in at least 976 herds across 17 states, including 13 herds ...

Since it was first detected in the United States in 2014, H5N1 avian influenza, commonly known as bird flu, has jumped from wild birds to farm animals and then to people, causing more than 70 human ...

Bird flu is spreading in across the U.S. this spring, impacting countless birds and raising concerns for farmers. Here's how to protect your animals.

Kansas is suffering from the worst outbreak of highly pathogenic avian influenza in the country, with nearly 414,000 birds affected, according to the U.S. Department of Agriculture. HPAI, an umbrella ...