H5 bird flu, a type of avian influenza, has infected dozens of people in the U.S., and spread to seven states and Canada this year. As more human cases arise, there's deepening worry over whether the ...

Officials suspect wild migrating birds are likely to blame for the first known infection of a flock in Hawaii, which had been the last state in the country with no reported cases in poultry or wild ...

As a virus scientist in South Africa, I’ve been watching with dread as H5N1 bird flu spreads among animals in the United ...

The H5N1 virus that infected a Canadian teen appears not to have spread, but it shows signs of mutation that makes flu ...

Study findings provide new details on a Caspian tern die-off near Port Townsend in 2023 and how the virus killed seals in the region, infecting their brains.

As H5N1 bird flu spreads among California dairy herds and southward-migrating birds, health officials announced Friday six ...

The World Health Organization voiced alarm at the growing spread of H5N1 bird flu to new species, including humans, who face an ‘extraordinarily high’ mortality rate. Hong Kong should test for ...

Investigations are underway after a teenager from British Columbia, now receiving care in hospital, was infected via an unknown source.

The health agency now urges proactive testing and treatment for the virus among any workers who were exposed to H5N1.

An epidemiological study found that 56 percent of a large breeding colony of Caspian terns died from a 2023 outbreak of highly pathogenic avian influenza at Rat Island in Washington state. Researchers ...

The first confirmed case of H5N1 avian influenza in a U.S. pig has been reported by the USDA. The infected pig, part of a backyard farm with mixed livestock, showed no illness but tested positive.

Officials said there was little risk to public health because the H5N1 bird flu is unlikely to spread between humans. Washington public health officials were already investigating human cases of ...