A new COVID strain has become increasingly more common in the U.S. in recent weeks and can cause a painful symptom that some are calling "razor blade throat." COVID variant, NB.1.8.1, nicknamed Nimbus,

"Razor blade throat" is one of the symptoms connected to a new COVID-19 subvariant called "Nimbus" that is spreading across California.

The newest variant, NB.1.8.1, also known as Nimbus, is now widespread in California and across the United States. The new variant comes with increased transmissibility, and some are reporting an unpleasant symptom: “ razor blade throat ,” or a severe sore throat.