Over 160,000 people this season have landed in the hospital from flu complications, CDC estimates. More than 6,600 have died.

The newly reported H5N9 strain was found Monday at a duck farm in Merced County, California, according to the World ...

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

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

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

US officials are investigating the appearance of a strain of bird flu identified in the US for the first time, a worrying ...

Wisconsin is among 10 states to report human cases of the H5N1 virus so far, with more than half reported in California.

A new strain of bird flu has been detected on a duck farm in California. The World Organisation for Animal Health reported ...

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 ...

Ohio is not the only state experiencing high levels of flu activity. North Carolina, Georgia, Alabama, Mississippi, Michigan, ...

Experts stressed that the new strain did not itself appear to be an immediate human threat. But the rise of a new strain is ...

Bird flu pops up every year in the same way that flu season does for humans. Each time there's a different strain as ...