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

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 ...

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

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

A California duck farm has culled thousands of birds as the virus seems to be trading genetics with other viruses ...

Dr Angela Rasmussen, a virologist in Canada, warned: 'It does suggest there's enough [H5N1] virus around that reassortment might become more frequent. With enough H5 in these animals and enough ...

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 ...

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

A new strain of H5N9 bird flu was detected at a commercial duck operation in California's Merced County. All the ducks were ...

The first U.S. H5N9 outbreak has raised concerns as scientists warn of evolving bird flu risks—here's what you need to know about the symptoms.