New Covid variant NB.1.8.1: Why everyone’s talking about 'razor blade throat'

Written by: Dr Subita Alagh Reviewed by: Dr. Swati Mishra 23 June 2025

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What Is the Nimbus Variant?

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How Fast Is It Spreading?

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The Most Reported Symptom?

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Other Common Symptoms

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Less Common But Noted Symptoms

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What Experts Say

[{"selector":"#anim-47c8d361-5a41-4421-a9a1-ca3be770eb7d","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9340f03b-5081-4083-995a-2623fd49d44e","keyframes":{"transform":["translate3d(0px, 133.28281%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-27fe5440-9d1d-477a-9dda-32c0c51f7037","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2d8507f1-393d-45bd-a15b-e924fab8f9c5","keyframes":{"transform":["translate3d(0px, 950.61766%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] While NB.1.8.1 may not cause severe illness, its rapid spread and painful symptoms call for caution. ✔Mask in crowded places ✔ Stay updated on symptoms ✔ Consult a doctor if unwell Photo Credit: Shutterstock