The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea ...

As we get deeper into flu season, a new type of the influenza virus has been identified, the Centers for Disease Control and ...

A mutated strain of influenza A, H3N2 subclade K, is surging worldwide, sparking concerns about a severe flu season in the ...

U.S. flu rates remain low, but experts are keeping an eye on a new strain that’s been linked to unexpectedly early and severe ...

Having the flu is a lousy experience, regardless of the type you have. While news of a rough flu season ahead (spurred by subclade K) continues to make headlines, there are two main types of flu, A ...

A new strain of the flu is coming around, but there are ways to be prepared. Doctors say flu season typically runs from December to around March or April. However, it’s gotten off to an early start ...

The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K ...

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 ...

This year's version of H3N2 has experts on alert. It's a mutated version, subclade K, that may weaken the vaccine's ...

A study uncovers the viral gene that lets bird flu beat fever, reshaping surveillance strategies as H5N1 continues to spread.

Bird flu viruses are a particular threat to humans because they can replicate at temperatures higher than a typical fever, ...