Bird flu H5N1 has infected people in the U.S. See the map of cases. Could it trigger the next pandemic? Experts explain the ...

Bird flu has been spreading among dairy workers in California's Central Valley, jumping from cows to people. A new suspected ...

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

California health officials have identified a possible bird flu case in a child who was tested for mild upper respiratory ...

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 ...

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

It’s been nearly eight months since avian flu was first detected in U.S. dairy herds, and cases in both cows and humans continue to pile up. That slow burn of infections through our nation’s livestock ...

With 46 U.S. cases and alarming signs of the virus crossing species, experts warn of unpredictable risks if human-to-human ...