Here’s what the Centers for Disease Control and Prevention (CDC) says about the Delta variant, its symptoms, characteristics and other things to watch for: Viruses constantly change through mutation, ...

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 ...

The delta variant of SARS-CoV-2, the virus that causes COVID-19, has been making headlines as it has quickly become the most prevalent strain in America. But other variants of the virus are still out ...

Yep, just in time for Valentine's Day.

Medically reviewed by Kate Colby, MPH The COVID-19 incubation period is the time between exposure to the SARS-CoV-2 virus and the onset of symptoms.Over 98% of people in the U.S. have some COVID-19 ...

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 rules have changed. We have a different epidemic now that we did in May." Adding more insight into the CDC’s updated mask guidance, newly published details of the Provincetown outbreak raise ...