Four theories could explain the variants' ability to jump from person to person. In recent months, new variants of the virus that causes COVID-19 have been popping up all over the world, and experts ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. A new COVID-19 strain, referred to as NB.1.8.1 or "Nimbus," first appeared in the U.S. sometime near the end of April and is ...

It's been less than a month since health officials reported the first known case of a new and more contagious coronavirus variant in Texas. The man, a Harris County resident, had no travel history.

Covid-19 was never just another cold. We knew it was going to stick around and keep changing to try to get the upper hand on our immune systems. But we've changed, too. Our B cells and T cells, ...

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 ...

New COVID-19 variant XFG has firmly positioned itself as the predominant strain in the United States as cases continue to crop up nationwide. Some regions of the U.S. are experiencing higher rates of ...

A COVID-19 variant that’s accounted for a growing number of cases in the nation has been making headlines in recent days due to a symptom people are describing as “razor blade throat.” The variant, NB ...

The study included more than 12,000 COVID-19 cases in the UK. Two coronavirus vaccines have shown to be effective against the variant first identified in India, according to a recent study. British ...

Why do some people with high concentrations of antibodies against COVID-19 develop severe forms, while others, with moderate levels, experience less intense symptoms? Work carried out at ...

COVID-19 cases continue to climb week-over-week as summer draws to a close, according to U.S. health data. Some regions of the United States are experiencing higher rates of positive COVID-19 tests ...