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,

Nicknamed “razor throat," the symptom of the Nimbus variant is an intensely painful sore throat, with some patients likening it to “swallowing shards of glass."

A new COVID-19 variant spreading in some parts of the world has been nicknamed "razor blade throat" because of its painful symptoms. The variant — NB.1.8.1. or "Nimbus" — has been identified by doctors in the United Kingdom, India and elsewhere, The Associated Press reports.