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 ...

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 ...

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.

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 ...