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

The percentage of emergency department visits in the state due to COVID-like illnesses has gone up for five consecutive weeks ...

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

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.

Five things to know about the summer COVID surge—including 'razor blade throat' by Cynthia McCormick Hibbert, Northeastern University edited by Lisa Lock, reviewed by Andrew Zinin Editors' notes ...

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 throat fatigue.” ...

The 'nimbus' variant is known for having a painful throat based symptom, referred to as 'razor blade throat.' The variant is a mutated omicron subvariant.