A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine effectiveness this season. Here are the states at most risk.

WASHINGTON (AP) — Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to ...

The new Covid variant is continuing to proliferate around the U.S. — although you might not know it by just checking federal variant-tracking dashboards. Known as NB.1.8.1, the omicron variant has ...

A new COVID-19 variant that was unheard of just months ago is now projected to be the second-most common strain in the United States. Variant NB.1.8.1 was first detected in China in January but ...

Get inspired by a weekly roundup on living well, made simple. Sign up for CNN’s Life, But Better newsletter for information and tools designed to improve your well-being. A new coronavirus variant is ...

The COVID-19 variant that may be driving a recent rise in cases in some parts of the world has earned a new nickname: "razor blade throat" COVID. That's because the variant — NB.1.8.1. or "Nimbus" — ...

A new variant has entered the COVID-19 picture, and scientists have warned that it might soon surge to dominance. XEC, which was first identified in Germany in June, has now been spotted in Denmark, ...

This is an update of an article originally published on September 23, 2024. As the United State gears up for a potential surge of COVID-19 cases during the colder months ahead, health authorities are ...

With summer travel at an all-time high, new COVID-19 variants are brewing. Officials at the World Health Organization (WHO) recently added another one to its list of variants under monitoring: XFG.

As COVID-19 activity remains high across the United States, a new hybrid variant called XEC is spreading rapidly in Europe and other parts of the world. The XEC variant has been detected in at least ...

A new COVID-19 variant, unheard of just months ago, is projected to be the second-most common strain in the U.S. just in time for summer. Variant NB.1.8.1, first detected in January in China, ...