Differing strains of the coronavirus continue to appear around the world and a new COVID-19 variant, the so-called "Delta" variant, has health experts concerned. The variant, otherwise known as B.1617 ...

One thing we know for sure about SARS-CoV-2, the virus that causes COVID-19, is that it keeps changing. Since the start of the pandemic, we have seen several notable variants, including Alpha, Beta, ...

The delta coronavirus variant surging across the United States appears to cause more severe illness and spread as easily as chickenpox, according to an internal document from the US Centers for ...

SAN FRANCISCO -- Preliminary data out of South Africa is giving the world insight into how strong omicron really is. The South African Medical Research Council just reported this variant may cause ...

NEW YORK -- What are the symptoms of omicron? Health experts still don't know if the new variant is causing milder COVID-19, but more indicators are emerging. The World Health Organization's top ...

More than half of the U.S. population has received at least one dose of the coronavirus vaccine. But based on a new scenario model by Johns Hopkins the next three months are crucial if we want to ...

SAN FRANCISCO -- There's a new "subvariant" of the omicron variant that's been spreading across Europe and the U.S. Preliminary data shows it's more contagious than omicron. Scientist have named it BA ...

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 ...

A new COVID-19 variant, XFG or “Stratus,” is on the rise in the United States, including in New Jersey. Symptoms of XFG are similar to other COVID-19 variants, and current vaccines are expected to ...