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

Over the past week, a series of developments have reaffirmed the imminent danger of an H5N1 “bird flu” pandemic, for which ...

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 ...

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

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 ...

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 ...

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

The recent appearance of the new strain of bird flu, H5N9 in ducks in California ... has most likely already undergone a process of viral reassortment, in which the virus evolves into becoming ...

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

Most of the bird flu cases reported so far in the U.S. have belonged to an influenza subtype known as HPAI H5N1. The newly ...