New COVID variant may cause 'razor blade throat' — here's what to know

A new COVID-19 variant called NB.1.8.1 could account for up to one-third of cases, according to health officials. 

One hallmark of this latest strain is a symptom some people are calling "razor blade throat."

The variant — informally referred to as "Nimbus" — made up an estimated 37% of cases in the U.S. during a two-week period ending June 7, as stated by the Centers for Disease Control and Prevention (CDC).

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Nimbus...