The delta variant is fueling the COVID-19 surge in the United States, but experts warn that a more dangerous variant could emerge if more Americans don't get vaccinated. Delta is the most recent of ...

U.S. health officials are on high alert and looking for any cases of the new omicron variant. Questions are also being raised if this new variant will overtake delta. Dr. Otto Yang, a leading ...

(NEXSTAR) – When the omicron variant emerged, it immediately made its presence known, spreading like wildfire and driving the United States’ largest coronavirus case spike yet. In 2023, the ...

WASHINGTON - The delta variant of the coronavirus now accounts for an estimated 83% of COVID-19 cases in the United States as it continues to surge largely among unvaccinated populations, officials ...

As coronavirus vaccinations slow in the U.S., the contagious infectious delta variant is driving a rise in cases nationwide. The delta variant emerged in India and is currently widespread, according ...

When the world first heard the word "coronavirus" in late 2019, few imagined that the virus would continue to reinvent itself half a decade later. From the devastating Delta wave in India to Omicron's ...

Omicron and its subvariants make up 99.9% of current COVID-19 spread. What happened to the variants that once wreaked havoc? “For all intents and purposes, we can consider them gone,” said David Dowdy ...