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

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

A child in California has tested positive for bird flu, and is recovering at home with mild upper respiratory tract symptoms, ...

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

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 ...

The World Is Watching The U.S. Deal With Bird Flu, And It's Scary As a virus scientist in South Africa, I’ve been watching with dread as H5N1 bird flu spreads among animals in the United States. The ...

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

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.