COVID-19 cases are rising across the United States, driven by new variants Stratus (XFG) and Nimbus (NB.1.8.1). While Stratus ...

A new COVID-19 variant named "Nimbus" has been detected in the U.S. and is spreading rapidly. Here's what to know about symptoms and vaccines.

The “razor blade sore throat” was a common symptom when the variant cropped up in China, WebMD reported and has been found in cases worldwide.

It has been called “Nimbus” and produces a “razor blade sore throat” as a symptom. The “razor blade sore throat” was a common symptom when the variant cropped up in China, WebMD ...

After contracting COVID in late June, I can confirm that “razor blade throat” is an accurate descriptor for what you experience with this strain.

Summer 2025 COVID variant NB.1.8.1 causes severe razor blade throat pain. Expert explains 5 key facts about symptoms, transmission and prevention.

What are the symptoms of Nimbus? Reported symptoms of NB.1.8.1 are similar to other COVID-19 strains, but one distinctive complaint is a severe sore throat, sometimes described as “razor-blade ...