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

CDC tracks rising COVID cases in 45 states; NB.1.8.1 “Nimbus” leads U.S. infections while severe illness remains low.

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 ...

The "probability" of a COVID-19 epidemic trend growing in California is 99.52%, according to the most recent CDC data.

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