President Donald Trump and California officials fight over water. Scientists raise concerns about the bird flu’s pandemic risks. Democrats in Oklahoma question the focus of the state’s Trump-supporting education superintendent.

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.

The virus was reported in a commercial flock of ducks. It’s the first time the subtype has been detected in the United States.