A second subtype of H5 bird flu, known as D1.1, was detected in dairy cattle and infected one worker in the US state of ...

H5N1 avian influenza continues to spread amid commercial and backyard poultry, and additional cases have been reported in ...

Although cases of bird flu are surging among birds in the UK, the risk of the virus spreading to humans still remains ...

Most human cases of bird flu in the U.S. have been mild so far, and most had known exposure to sick or infected animals. Avian influenza A viruses are very different from human seasonal influenza ...

While the H5N1 bird flu keep spreading, the first reported H5N9 outbreak in the United States has been identified on a duck ...