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 ...

A painful sore throat, often referred to as "razor blade throat", is just one of the symptoms of a new COVID-19 variant. This ...

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 ...

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.

COVID-19 is remains a public health concern five years after the start of the pandemic. What to know about vaccines, variants ...

A highly transmissible new COVID-19 variant called NB.1.8.1, aka "Nimbus," is spreading in the United States, CDC data show.

As the Trump administration moves to limit COVID booster vaccines for some, here's what to know about the latest variant NB.1 ...