The WHO has designated Nimbus as a ‘variant under monitoring’ and considers the public health risk low at the global level. Current vaccines are expected to remain effective. The variant has earned a new nickname – ‘razor blade throat’ Covid.

A newer COVID-19 variant may be causing a severe sore throat in those who contract the infections. Here's what to know about "razor blade throat."

A new COVID-19 variant, nicknamed Nimbus, is rising around the world — including in California — and known for giving “razor blade throat” symptoms.