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 ...

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 ...

ATLANTA, Ga. — The delta variant that’s now the dominant strain of coronavirus in the U.S. appears to be as transmissible as chickenpox, according to an internal document from the Centers for Disease ...

Health officials are urging residents to be aware of new symptoms possible under a quick-spreading COVID-19 variant as it marches down the Interstate 44 corridor from southwestern Missouri to the ...

COVID-19 cases have been surging in Texas and nationally - mostly among unvaccinated people - as the highly contagious delta variant has become dominant. While dozens of variants have spawned from the ...

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 ...