In 2009, H1N1 bird flu caused the first global flu pandemic in 40 years, with the first infections detected in California.

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 ...

California health officials reported Tuesday that a child in Alameda Co. has been infected with bird flu; source unknown.

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 ...

Health officials have announced six more H5N1 bird flu infections in humans: five in California and the first known case in ...

New CDC research suggests that a small but significant percentage of dairy farmers working near infected cows have recently ...

A teenager diagnosed with bird flu in British Columbia is the first domestically acquired human case of H5N1 avian influenza, ...

Experts and health authorities say that while the risk of human infection with the H5N1 strain of avian influenza remains low ...

Cases of H5N1 bird flu in U.S. dairy and poultry workers have largely been mild. However, a new case in a British Columbia ...

The first report of a H5N1 infection in a pig on a backyard farm in Oregon was confirmed by the Centers for Disease Control ...