A new COVID-19 variant named "Nimbus" has been detected in the U.S. and is spreading rapidly. Here's what to know about symptoms and vaccines.

New Covid Nimbus: 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 COVID-19 strain with the nickname of "nimbus" has become the dominant variant of that disease in the U.S. but hasn't yet been confirmed in Kansas.

A new COVID-19 variant named "Nimbus" has been detected in the U.S. and is spreading rapidly. Here's what to know about symptoms and vaccines.

A new COVID strain called "Nimbus" is now in the U.S. Nimbus has spread to at least 22 countries Symptoms include "razor blade" sore throat Once again, a new strain of COVID has hit the country ...