New Razor Blade Throat COVID Variant Explained | NB.1.8.1 Symptoms & Spread | NEWSDRIFT

A new COVID-19 variant, NB.1.8.1—also known as the “Nimbus” variant—is rapidly spreading across the U.S. and other countries. Nicknamed the "razor blade throat" COVID variant due to its extremely painful sore throat symptom, this Omicron subvariant is now under close monitoring by health authorities. In this video, we break down what makes this variant unique, the symptoms to watch for, how it spreads, and what you can do to protect yourself.

Stay informed about the latest COVID-19 developments and learn how to handle the intense sore throat symptoms linked to this variant.

Timestamps:
0:00 Introduction
0:48 What is the NB.1.8.1 Variant?
2:12 What Causes Razor Blade Throat?
3:40 Transmission and Global Spread
5:10 Treatment and Prevention Tips
6:45 Final Thoughts

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In recent months, a new COVID-19 subvariant has emerged, capturing the attention of health experts and the public alike. Known as NB.1.8.1, or more commonly referred to as the “Nimbus” variant, it’s quickly gaining ground around the world—and not just for how fast it's spreading. What’s making headlines is a startling symptom reported by many infected individuals: a sore throat so severe, it feels like swallowing razor blades.

This painful sensation has led to the nickname “razor blade throat” for the new COVID variant. But what exactly is causing this unusual symptom, and how concerned should we be?

Let’s break down what we know so far.

The NB.1.8.1 variant was first identified in January 2025. By late May, the World Health Organization officially designated it a Variant Under Monitoring. Since then, its spread has been significant. In the United States alone, NB.1.8.1 has accounted for nearly 37 percent of all COVID cases by early June, making it one of the most dominant strains currently circulating.

What’s driving its rise? Like other Omicron offshoots, Nimbus is highly transmissible. Lab studies estimate it could be up to two and a half times more contagious than earlier strains like LP.8.1. Its growth pattern follows the familiar seasonal rhythm we’ve seen with past variants—surging in both winter and summer months. It’s already been detected in more than 20 countries across North America, Europe, and Asia.

But unlike previous variants, the defining symptom of Nimbus is drawing particular attention. Many patients have reported what they describe as a “razor blade throat”—an intensely painful sore throat that makes swallowing feel like torture. While sore throats are nothing new to COVID, especially since the rise of Omicron, the vivid and severe nature of this symptom with NB.1.8.1 is unusual.

So, what’s behind the so-called razor blade throat?

Experts believe it comes down to how this variant affects the throat tissues. While the virus’s core behavior hasn’t dramatically changed, the Nimbus strain may target the upper respiratory tract more aggressively, leading to sharper inflammation in the throat lining. Though this symptom is uncomfortable, it’s not necessarily dangerous on its own.

It’s also important to put this into perspective. Omicron subvariants have long been associated with sore throats, and this may simply be a continuation of that trend—only reported more vividly due to how intense it feels for some people. Up to 70 percent of Omicron cases have featured sore throat symptoms, and this could be an extension of the same clinical pattern.

Despite the discomfort, there's currently no evidence that the NB.1.8.1 variant causes more severe illness. Hospitalization rates have remained relatively low, and for most healthy individuals, symptoms remain manageable at home. Vaccination continues to provide strong protection against serious complications, including hospitalization and death.

That said, the high rate of transmission and the severity of symptoms like razor blade throat are reminders that COVID is still evolving—and not something to be taken lightly.

So what should you do if you come down with razor blade throat or suspect you’ve been infected with Nimbus?

First, take care of your symptoms. Over-the-counter remedies like ibuprofen or naproxen can help reduce inflammation and relieve pain. Honey, saltwater gargles, lozenges, and warm liquids may provide temporary relief for throat pain. Staying well hydrated and getting adequate rest are also essential.

If you’re in a high-risk group—such as being over 65, immunocompromised, or dealing with chronic health issues—it’s especially important to stay updated with your COVID vaccines and boosters. Public health officials continue to recommend masking in crowded places, hand hygiene, and testing if you’re experiencing symptoms or have been exposed.