NB.1.8.1, a new COVID-19 variant that has caused concern among WHO officials, is now spreading in America, according to CDC data.

Nimbus has been detected in at least 14 states including New York, New Jersey, Massachusetts and Rhode Island.

As much of the world moves on from the early chaos of the pandemic, a new COVID-19 variant is quietly making its way through communities across Asia, Europe, and now the United States. Known scientifically as NB.