Scientists investigating how influenza viruses replicate within cells "accidentally" discovered that different flu viruses ...

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

Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to keep growing with holiday travel. That variant, known as “subclade K,” led to early outbreaks in ...

The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K that’s behind early surges in the United Kingdom, Canada and Japan. Last ...

Doctors and scientists say this year's influenza season could be tougher than usual. A new version of the flu virus, called H3N2, is spreading quickly. At the same time, fewer people are getting flu ...