The Centers for Disease Control and Prevention called it the first severe case in the U.S., though the risk to most of the public is still low.

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 U.S.

As bird flu makes headlines with its first severe U.S. case, experts share crucial information about symptoms, risks, and prevention methods to keep y

At least 61 people in the US have contracted bird flu amid outbreaks in poultry and dairy cows. What are the symptoms? What to know about highly pathogenic avian influenza, aka, H5N1.