A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine ...

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

Doctors and scientists say this year's influenza season could be tougher than usual, with a new version of the flu virus, ...

Following a national trend, 52 counties in Florida saw increasing cases of influenza A driven by a new mutation called ...

Symptoms for influenza A and its subclade K variant are similar, and both are typically more serious than influenza B. They ...

Flu season in America is underway with a new variant called subclade K, recent Centers for Disease Control and Prevention ...

The CDC estimates that there have been at least 4.6 million illnesses, 49,000 hospitalizations, and 1,900 deaths from flu ...

If you have a mild illness like a cold, it’s fine to get a flu shot. If you’re already experiencing flu-like symptoms, like ...

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

Tis the season for sniffling, coughing and calling out of work. Here's what to know about the pathogens circulating in the ...

Holidays are upon us — and so is the flu. More Americans are getting infected with seasonal influenza and seeking care, according to Centers for Disease Control and Prevention data. “It is clearly the ...

While flu cases are down compared to recent years, Florida saw an uptick in positive cases and hospitalizations.