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 ...

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 ...

Several COVID-19 variants are acting uniquely enough to qualify as a distinct strain. And you might have heard about one on the news: the Delta variant. Today we’re going to talk about what it is, why ...

A newer COVID variant called XFG is currently fueling cases of the virus across the country. Nicknamed “ Stratus,” this ...

PHILADELPHIA (WPVI) -- New numbers are shedding light on just how quickly the Delta variant of COVID-19 is spreading in the United States. The more contagious Delta variant now makes up 83% of ...

This variant is slightly more infectious than previous variants. COVID-19 cases were relatively low across the country for most of the summer, but they’re now creeping up again. Data shows that this ...

The variant is officially named XFG but is being called Stratus. It was first found in Southeast Asia in January, and at the time was 0% of cases in the U.S., but by the end of June, it was about 14% ...

A new COVID-19 variant is climbing the ranks in the United States, becoming the third-most common strain of the summer. Variant XFG, colloquially known as "Stratus," was first detected in Southeast ...

SAN FRANCISCO -- The R1 variant is the new strain of COVID-19 researchers are keeping a close eye on. The CDC identified "multiple spike protein mutations" in this variant. "The R.1 variant does carry ...

The Stratus COVID-19 variant has been fueling a rise in cases across the country. Stratus is currently the dominant variant in the U.S. This variant is slightly more infectious than previous variants.