What to know about COVID-19 this week: Cases, variants, symptoms, vaccine guidelines

COVID-19 viral activity is high in the U.S., according to CDC data. Here's a look at the latest, including test positivity by region. Read More

All about the 'Nimbus' and 'Stratus', the new COVID variants monitored closely by WHO

COVID-19 might not dominate the headlines anymore, but that doesn’t mean it has stopped evolving. In fact, behind the scenes, scientists are closely tracking several offshoots of the Omicron variant. Read More

XFG 'Stratus' COVID Variant Spreading Rapidly in US as Cases Surge. Know These Symptoms

The XFG COVID-19 variant, aka "Stratus," is spreading rapidly in the U.S. as cases climb. Here's what to know about symptoms of the newly dominant strain. Read More

Map Shows Rising COVID Cases as Stratus Variant Spreads

The new COVID-19 strainalso known as XFG—is a "variant under monitoring" by the World Health Organization (WHO). Read More

Is the mu variant worse than delta? What to know about COVID-19 mutations

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 ... Read More

New COVID variant is spreading across CA. What are symptoms? Do tests still work?

Here’s what to know about the latest COVID strain — and how to tell if your at-home test is still good to use. Read More

What to know about the Nimbus COVID-19 variant

The Nimbus variant, or NB.1.8.1, is a strain of SARS-CoV-2, which causes COVID-19. Alongside the usual symptoms of COVID-19, it can cause a razor blade sensation in the throat and gastrointestinal ... Read More