Razor Blade Throat’ Symptom

Razor Blade Throat’ Symptom: What to Know About the New COVID Variant NB.1.8.1

What Is the Razor Blade Throat COVID Variant? The “razor blade throat” COVID symptom refers to an unusually severe sore throat associated with the NB.1.8.1 subvariant, also called the Nimbus variant. First observed in the U.S. in mid-2025, this strain appears to target the upper respiratory tract, especially the oropharynx, causing intense pain described by…

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