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" has come to dominate headlines, having been discovered in India where it provoked an extreme surge in Covid-19 cases before spreading around the world. Stream San Diego News 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 ...

COVID-19 variant XFG accounted for 0% of U.S. cases in May. By late-June, it became the third-most common strain.

Scientists are reporting troubling signs that some recent mutations of the virus that causes COVID-19 may modestly curb the effectiveness of two current vaccines, although they stress that the shots ...

SAN FRANCISCO -- Preliminary data out of South Africa is giving the world insight into how strong omicron really is. The South African Medical Research Council just reported this variant may cause ...

A new Covid variant spreading around the U.S. may come with an incredibly unfortunate symptom now commonly referred to as “razor blade throat.” NB.1.8.1, which is also known as or “Nimbus,” is now ...

SAN FRANCISCO -- A new variant of the coronavirus that has been spreading through the UK and other countries has not yet been detected in the United States, according to the CDC. But that doesn't mean ...

The year 2025 served as a stark reminder that COVID is no longer the only illness demanding public attention. Over the months, several diseases resurfaced or intensified, some reaching epidemic levels ...

SAN FRANCISCO -- A case of the coronavirus variant was detected in Southern California Wednesday, while a second suspected case has been identified in Colorado. According to officials, the COVID-19 ...