COVID-19 cases are rising in half of U.S. states. What to know about COVID trends and the new Stratus and Nimbus variants.

Virus levels have increased sharply since June, with nearly all wastewater sites showing signs of transmission.

A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to ...

It may be summer, but COVID-19 is surging in the San Francisco Bay Area.

Infections of COVID-19 are growing or likely growing in half of the U.S. as of July 8, according to CDC estimates.

COVID-19 cases in California show a potential summer surge, with wastewater data indicating increased virus levels.

Experts said that COVID-19 vaccines are expected to be effective against this variant known as "nimbus." ... In April, NB.1.8.1 made up 2% of COVID-19 cases in California.

COVID-19 rages on as a new threat to the state of California.According to recent reports, a deadly subvariant, NB1.8.1 or “Nimbus,” is on the rise and carries symptoms of razor blade throats ...

Designated as NB.1.8.1, the Nimbus strain is a descendant of Omicron. WHO has listed it among six variants under close observation.

A newer COVID-19 variant may be causing a severe sore throat in those who contract the infections. Here's what to know about ...

Nicknamed “Nimbus,” the new subvariant NB.1.8.1 has been described in news reports in China as having more obvious signs of “razor blade throat” — what patients describe as feeling like their throats ...

A new variant of COVID-19 is spreading across the U.S., causing a painful symptom dubbed “razor blade throat.”. COVID variant NB.1.8.1, nicknamed Nimbus, accounts for more than a third of ...