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 cases.

Sharp throat pain that feels like swallowing razor blades—this symptom is particularly noticeable in infections with the new coronavirus variant NB.1.8.1. The subvariant, also known as "Nimbus," is ...

A new COVID-19 variant, unheard of just months ago, is projected to be the second-most common strain in the U.S. just in time for summer. Variant NB.1.8.1, first detected in January in China ...

A painful new symptom is drawing attention from doctors as another COVID-19 variant begins to spread across the US. The sore throat has been described as “razor-blade throat” — an intensely ...

A new coronavirus variant is spreading in many parts of the world. The variant, NB.1.8.1, has been identified as the cause of Covid-19 resurgence in China and several other Asian countries.

A new Covid-19 variant, officially known as NB.1.8.1 and nicknamed Nimbus, is now the most common strain in the US, according ...

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.

Scientists in China have discovered 22 potentially pandemic-causing viruses never before detected in nature — including two ...

A new version of COVID-19 that hardly anyone had heard of a few months ago is spreading quickly in the nation after first being detected in China earlier this year. The variant, called NB.1.8.1 or ...