Why the results surprised anyone is itself a surprise. After the state of California began testing dairy herds for highly ...

California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in that state and causing sporadic illnesses in people in the United States.

A genetic analysis suggests the bird flu virus mutated inside a Louisiana patient who contracted the nation’s first severe ...

The death of an Oregon house cat and a pet food recall are raising questions about the ongoing outbreak of bird flu and how ...