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 ...

COVID-19 viral activity was high in the United States during the first week of September, according to fresh data from the Centers for Disease Control and Prevention. Some regions of the United States ...

Since SARS-CoV-2 first emerged in late 2019 the virus has spawned dozens of lineages, a handful of global "variants of ...

CoV-2, the coronavirus behind the COVID-19 pandemic, constantly mutate. Since 2025, multiple new variants have emerged, each ...

AI-generated summary reviewed by our newsroom. Read our AI Policy. A new COVID-19 variant has quickly emerged as dominant in a matter of months, according to data from the Centers for Disease Control ...

A new COVID-19 variant — XFG, also known as Stratus — is spreading rapidly, the Centers for Disease Control and Prevention says. The South Carolina Department of Health does not track COVID infection ...

Health officials are warning of a seasonal surge in flu and Covid-19, with cases already starting to rise as autumn arrives. But because the two viruses share many symptoms, it’s difficult to tell ...

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 is thanks to the new COVID-19 variant XFG, nicknamed Stratus, ...

XFG variant rose from 14% to 78% of U.S. cases between June and August 2025. Updated vaccines offer protection; older or at-risk adults advised to act early. CDC urges masks, hand hygiene and rapid ...

AI-generated summary reviewed by our newsroom. Read our AI Policy. XFG variant rose from 14% to 78% of U.S. cases between June and August 2025. Updated vaccines offer protection; older or at-risk ...