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

The U.S. Department of Agriculture has detected a second bird flu strain in dairy cattle that previously had not been seen in ...

Bird flu, also known as H5N1, continues to spread among U.S. livestock, driving up egg prices and worrying public health ...

Dairy cattle in Nevada have been infected by a new type of bird flu which is different from the version that has spread in herds since last year. Katherine Ward has this story and more in Health ...