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 ...

The delta variant is by far the dominant strain of the coronavirus in North Carolina and the rest of the country, but experts say there are also other variants to watch. Before delta, there was alpha, ...

Add Yahoo as a preferred source to see more of our stories on Google. It's been a little more than five years since the COVID-19 pandemic ripped through the country, and now a new variant of the ...

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, ...

COVID-19 viral activity was high in the United States during the first week of September, according to fresh data from the Centers for Disease Control and Prevention. Some regions of the United States ...

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 ...

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 ...