Bird flu was nearly everywhere in the U.S.—in chickens, cows, pet cats and even humans. Cases have gone down, but experts ...

The first confirmed case of H5N9 bird flu in the United States has been identified in Merced County, California, and control measures are being undertaken to contain the virus.

On Monday, the U.S. reported an outbreak of bird flu called H5N9 that is different from the H5N1 strain that is currently surging across the country. The outbreak occurred in a flock of commercial ...

The H5N9 strain was detected in the United States for the first time, U.S. Veterinary Services said weeks after the first U.S. death from H5N1.

Farm workers facing possible arrest would likely resist getting tested for bird flu should there be a resurgence this fall, ...

The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another ...

The H5N9 strain of avian influenza is much more rare than the H5N1 which has been responsible for most of the reported human cases and the first human death.

A new paper from a team of Cornell University researchers shows that the highly pathogenic avian influenza H5N1 virus causes ...

More than 100 federal scientists who track bird flu, including vaccine and food safety experts, have been laid off. This comes as the deadly pathogen rips through dairy herds and poultry flocks.

Preventing a pandemic means early detection of bird flu strains — surveillance of viral spread and influenza infections in hospitals.