The newly reported H5N9 strain was found Monday at a duck farm in Merced County, California, according to the World Organization for Animal Health. The Paris-based organization that studies animal diseases said it's the first verified U.S. case of H5N9 in poultry. The organization said the more common strain H5N1 was also found.

Are people at risk for bird flu? How can I protect myself? Bird flu’s risk for the general public is still low, with no signs of p

Most of his health picks are uninterested in using most of the tools that can limit the spread of infectious disease.

Bird flu appeared in a Texas dairy farm in March 2024. Havoc has followed on farms and in grocery stores and concerns mount for human health.

A dairy worker in Nevada was infected with a new type of bird flu that’s different from the version that has been spreading in U.S. herds since last year, federal health officials said Monday. The illness was considered mild.

Nevada confirms its first human case of bird flu amid a growing U.S. outbreak impacting poultry, wildlife and the price of eggs.

As the bird flu continues to spread across the country, there's new evidence it's mutating beyond chickens and cows.