A new COVID-19 strain, referred to as NB.1.8.1 or "Nimbus," first appeared in the U.S. sometime near the end of April and is currently the dominant variant in the U.S. The new variant is said to ...

A new COVID-19 strain, referred to as NB.1.8.1 or "Nimbus," first appeared in the U.S. sometime near the end of April and is currently the dominant variant in the U.S. The new variant is said to ...

Two summer COVID strains – Nimbus and Stratus – less severe than earlier strains: doctor by Skylar Musick - 07/09/25 2:19 PM ET. by Skylar Musick - 07/09/25 2:19 PM ET.

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 ...

What's the new COVID strain being called? While its scientific name is NB.1.8.1, it has been nicknamed, "Nimbus.". Virologists describe Nimbus as a “slightly upgraded” version of its predecessor.