The U.S. flu season is starting slowly, and it’s not clear if it will be as bad as last winter’s. But some health experts are ...

The mutated strain, known as subclade K, is causing a surge in cases in the United Kingdom, Canada, and Japan. Here's what to ...

Vivaldi Biosciences Inc., a venture-backed company with operations at the Research Innovation Center at Colorado State University, has been issued a patent for its DeltaFLU universal influenza vaccine ...

The person was infected with a bird flu called H5N5, state officials said. It's the nation's first human case of bird flu ...