H5N1 has been the dominant grouping of strains fueling this past year's outbreaks in the U.S., with different variants of that virus spreading in wild birds, poultry flocks, dairy cattle ...

The U.S. hasn’t been able to control the spread of the H5N1 bird flu. And now, there’s been a reported outbreak in the U.S. of another strain of avian influenza, H5N9. This H5N9 outbreak ...

The more common H5N1 strain was also found at the same farm, which is located in Merced County, according to reports. Health agencies are conducting "comprehensive epidemiological investigations ...

Scientists also know a lot more about H5N1 bird flu than they did the SARS-CoV-2 virus, and the US has been preparing for the threat of a new flu outbreak for a long time. Still, the virus is ...

The Centers for Disease Control announced the first human death from H5N1 avian flu or "bird flu" in the United States on Jan. 6 - and the illness continues to spread. In a Jan. 6 news release ...

A child in California is presumed to have H5N1 bird flu, according to the San Francisco Department of Public Health (SFDPH). As of Dec. 23, there had been 36 confirmed human cases of bird flu in ...

A Louisiana resident has died after being hospitalized with bird flu, the state's health department announced Monday, marking the first U.S. death from the H5N1 virus. "The patient was over the ...

But how do researchers know that if a person tests positive for influenza A, it’s not H5N1 avian flu? “We don’t have the ability to differentiate through quick, antigen tests at this time ...