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 ...

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.

Estimates show the variant accounts for over 51% of all new cases nationwide. A highly contagious variant of the novel coronavirus that was initially identified in India is now the dominant strain in ...

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 currently the dominant variant in the U.S. The new variant is said to be ...

On Friday, the World Health Organization categorized a new strain of COVID-19 that was recently detected in southern Africa as a "variant of concern." The WHO's Advisory Group on SARS-CoV-2 Virus ...

SAN JOSE, Calif. (KGO) -- As long as there is on-going COVID-19 transmission somewhere in the world, there will be new variants. That's according to infectious disease expert, Dr. Jorge Salinas with ...

Coronavirus cases may surge in the coming weeks, as they have every summer since the pandemic began five years ago, experts said. Getting vaccinated, masking, improving air quality and staying away ...

Share on Pinterest Experts say variants of the virus that causes COVID-19 replicate quicker in people who are not vaccinated. David McNew/Getty Images Experts say the number of unvaccinated people in ...

A new COVID-19 variant called Stratus is rapidly spreading worldwide, distinguished by one telltale early symptom that sets it apart from other strains. The emerging strain appears in two forms: XFG ...

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 ...