Flu activity is rising sharply in the U.S. this season with at least 7.5 million estimated cases so far, largely due to a new ...

Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to keep growing with ...

A variant of influenza A, H3N2, is spreading across the U.S., with low vaccination rates contributing to infection rates.

A new form of the flu, which is highly contagious and aggressive, is sweeping the nation this season. A mutation of influenza ...

Much of the concern this flu season is coming from the spread of subclade K, a subtype of influenza A. Similar subtypes have ...

The new variant of Influenza A, or H3N2, has been given the nickname 'super flu.' The fast-spreading virus has caused ...

Known as subclade K, a new, mutated flu strain that has dominated in Europe and Asia is now rapidly spreading across the US.

Flu symptoms typically lasts at least five days and up to two weeks. Some symptoms, like a cough, may persist even longer ...

Were you or a loved one sick over the holidays? Here's what to know about new influenza variant and how to stay healthy ...

It’s already hit the U.K. and Canada. As if the holiday season wasn’t chaotic enough, the U.S. has been gifted with an early ...

Flu cases are slowly rising in Illinois in the lead-up to holiday gatherings this week, so what should you know before you ...

Researchers have said this year's flu vaccine may be mismatched with the currently circulating flu type known as subclade K.