Bird flu continues to spread across the U.S., with new infections in Hawaii and continued human outbreaks in California.

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

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

Authorities in Hawaii are warning residents who attended a local pet fair to watch for symptoms of avian influenza after a ...

Bird flu has spread far and wide, infecting a range of species like chickens, skunks, cows, foxes and polar bears. But it's ...

The particular variant of H5N1 circulating among birds in British Columbia and the north-western US appeared over the past ...

Hospitals had been asked to conduct extra surveillance for possible avian flu cases in the spring and summer after highly ...

The H5N1 strain of bird flu has infected a patient in the first ever confirmed human case of the virus, caused by the H5N1 ...

Ducks and geese on a backyard farm in Oahu, the state's main island, tested positive for H5N1 last week, which was likely ...

There is an inherent conflict of interest -- and the potential for injury to public health -- when a federal department both ...