Experts said it raises new questions about wider spread and the difficulty of controlling infections in animals and the ...

It was bird poop. Everyone had finished their supply of drinking water, and no one had hand sanitizer in their backpack. Two days later she had a cough, high fever, chills, and muscle aches. She ...

Migrant farmworkers are on the front lines of the H5N1 surge — but deportation fears complicate virus surveillance ...

Dairy herds in Nevada have been infected by a version of the H5N1 bird flu not previously seen in cows, putting virologists ...

The newer variant of avian influenza that recently infected dairy cattle in Nevada has a genetic change that’s thought to ...