The bird flu outbreak has spread to all 50 states, infecting dairy cattle, poultry farms and 61 humans across the country.

The H5N1 strains are becoming more concerning as the first severe U.S. case has been detected and California declared a state ...

California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in ...

Experts also recommend getting a seasonal flu shot. While it won’t protect against bird flu, it may reduce the chance of ...

Here’s what to know about the United States’ first confirmed severe case of H5N1 avian influenza—and how to protect yourself.