The delta variant is becoming the dominant coronavirus strain in the U.S. and many schools are taking the increase into account when planning for a safe opening in the fall. “The delta variation is ...

Last week, the number of COVID-19 cases in children in the US reached levels not seen since the winter surge. And with the return to school, the Delta variant on the rise and winter approaching, ...

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 fast-spreading delta variant of the coronavirus has been gaining traction worldwide since it was first detected in India. It’s a version of the coronavirus that has been found in more than 80 ...

Vaccine effectiveness against COVID-19 infection dropped from 91% to 66% once the delta variant accounted for the majority of circulating virus, according to a study published Tuesday by the U.S.

Here we go again: COVID-19 hospital admissions have inched upward in the United States since early July in a small-scale echo of the three previous summers. With an updated vaccine still months away, ...

Reported COVID-19 cases in the U.S. are no longer dropping and began to plateau around June 8, according to CDC data. 1. The U.S. vaccination campaign has slowed, and nearly a third of Americans are ...

Experts say there's no strong evidence that it makes children and teens sicker than earlier versions of the virus, although delta has led to a surge in infections among kids because it's more ...