A new strain of bird flu, H5N9, has been detected for the first time in the United States, raising concerns about how it continues to spread.

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

The California duck farm's strain of H5N9 is different from those earlier cases because this time it is closely related to a ...

The United States has reported its first outbreak of H5N9 bird flu on a duck farm in California, according to the World Organization for Animal Health (WOAH) on Monday. H5N9 is a rare subtype of the ...

The first confirmed case of H5N9 bird flu in the United States has been identified in Merced County, California, and control measures are being undertaken to contain the virus.

The first confirmed case of H5N9 bird flu in the United States has been identified in Merced County, California, and control measures are being undertaken to contain the virus.

First U.S. detection of virulent H5N9 strain, at a California duck farm, draws scrutiny as evidence of genetic reassortment that could trigger human outbreaks.

MERCED COUNTY, Calif. (KSEE/KGPE) – The country’s first case of H5N9 bird flu has been identified in Merced County, California, officials say. This H5N9 strain, which was identified earlier ...

The United States has reported its first outbreak of H5N9 bird flu in poultry on a duck farm in California, the World ...