ATLANTA - EXCLUSIVE: The Centers for Disease Control and Prevention on Tuesday will announce that the delta strain of COVID-19 is a "variant of concern" in the U.S., but that two doses of the Pfizer ...

The alpha variant has been the most prevalent lineage of the novel coronavirus in the United States since April, but the U.S. Centers for Disease Control and Prevention expects that is no longer the ...

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 ...

The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its "variants of concern" (VOCs) on June 15. According to the CDC, VOCs can be more contagious, more ...

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 ...

During the Delta wave of COVID-19, higher caseload strain negatively impacted patient survival rates across US hospitals, regardless of their size or resources. The researchers explained that US ...

An alleged warning has spread online for years about a supposed "new COVID-Omicron XBB variant" — a new strain of the coronavirus that has spread globally since early 2020. Framed as official guidance ...