The CDC released COVID guidelines for cruise lines with Feb. 18 ... close contacts to people identified with COVID-19 must quarantine until at least five full days after their last exposure.

NB.1.8.1 is one of the latest variants of COVID-19, a "slightly upgraded version" of the LP.8.1 variant that is prominent ...

The ugly head of COVID-19 is rearing once again as children return to school. The SARS-CoV-2 virus — a respiratory disease — can be very contagious and spread quickly, according to the U.S ...

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 know about symptoms and vaccines.

Since the first Covid-19 vaccines were authorized in December 2020, more than 672 million doses have been administered in the United States. For years, the Centers for Disease Control and Prevention ...

Variant NB.1.8.1 accounted for 0% of U.S. cases in April. By mid-June, it was estimated to be the cause of around 37% of ...