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 ...

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 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 ...

An internal Centers for Disease Control and Prevention document obtained by several news outlets warns that the COVID-19 delta variant could be more likely to produce severe illness and can spread as ...

In a recent study posted to the Preprints with The Lancet* server, researchers assessed whether school closures during coronavirus disease 2019 (COVID-19) outbreaks prevented viral transmission in ...

Pushback is happening over vaccine requirements and mask mandates. The United States is facing a COVID-19 surge this summer as the more contagious delta variant spreads. More than 615,000 Americans ...