California health officials investigate a child's potential bird flu infection, with precautions taken for close contacts.

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

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 ...

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

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

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

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

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 ...

A bird hospital in Cornwall has been temporarily closed due to the threat of avian flu. Mousehole Wild Bird Hospital Cornwall ...

The outbreak is Hawaii's first and appears to be part of a surge in poultry outbreaks in US states that are along the Pacific flyway, where wild birds are migrating south. Hawaii's outbreak also ...

Avian influenza H5N1 infection in humans has spread to seven U.S. states, growing from 46 cases last week to 52 cases this week.