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 ...

While COVID-19 transmission remains low in the US, health experts are anxious about the potential for a big summer wave as ...

A painful new symptom is drawing attention from doctors as another COVID-19 variant begins to spread across the US. The sore ...

A new COVID-19 strain linked to a spike in cases in China has been detected in the U.S., but the CDC says it has seen so few ...

Preliminary data from researchers in China suggest the NB.1.8.1 variant is not better at evading the immune system compared ...

Less than 20 cases of the new COVID-19 variant, NB.1.8.1, had been reported in the U.S., as of Tuesday, May 27.

The pathogen detected in the virus is closely linked to MERS, an extremely lethal virus that can kill upto a third of its affected.

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

A new COVID-19 strain has been reported in dozens of countries, including the U.S. Here's what you should know about it.