A new variant of the H5N1 bird flu — the same one that led to the death of a Louisiana man — has for first the first time ...

Two rare bird flu strains have emerged since late January, prompting public health concerns during a freeze on federal health communications.

Nearly 119,000 birds have been culled at a farm in California after a bird flu called H5N9 was detected among the poultry ...

Experts stressed that the new strain did not itself appear to be an immediate human threat. But the rise of a new strain is troubling and points to the risk of a viral phenomenon known as ...

A new strain of highly pathogenic bird flu (H5N9), which has never been seen in the United States before, was recently discovered on a duck farm in ...

Dozens of newly confirmed cases of avian influenza in wild birds and the first verified U.S. case of a new strain of the ...

In early December 2024, a group of researchers published an article in the journal Science, entitled “A single mutation in ...

While the H5N1 bird flu keep spreading, the first reported H5N9 outbreak in the United States has been identified on a duck ...

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

(Reassortment is the process by which influenza viruses swap gene segments, according to the National Institutes of Health.) With influenza viruses, scientists name them based on the Hs and Ns ...

The progression of the species-jumping disease has been unprecedented, including the first-ever U.S. cases of infections in ...