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 ...

A new Covid-19 variant called NB.1.8.1, or Nimbus, represents about a third of new US Covid-19 cases. Dr. Leana Wen answers common questions about the new variant.

A highly transmissible COVID-19 variant behind a rise in cases in China has made its way to the United States, and now attention is starting to focus on whether its symptoms bear any distinctions ...

The COVID-19 NB.1.8.1 variant has been linked to a high number of cases in China and Hong Kong. Earlier this month, Hong Kong authorities issued a statement urging the public — especially high ...

The variant, NB.1.8.1, has been identified as the cause of Covid-19 resurgence in China and several other Asian countries. Experts in Europe are predicting a possible increase in cases there.

The COVID-19 NB.1.8.1 variant has been linked to a high number of cases in China and Hong Kong. Earlier this month, Hong Kong authorities issued a statement urging the public — especially high ...

The variant, NB.1.8.1, has been identified as the cause of Covid-19 resurgence in China and several other Asian countries. Experts in Europe are predicting a possible increase in cases there.

The CDC confirmed the presence of the NB.1.8.1 variant, but says there are too few cases to be included in official COVID tracking data.