New Covid Variant ‘Nimbus’ Causes Razor-Blade Sore Throats

Emerging Strain Spreads Across Asia and North America

A newly identified Covid-19 variant, dubbed ‘Nimbus’ (NB.1.8.1), is gaining traction globally, distinguished by reports of an unusually severe sore throat. Health officials are monitoring its spread, as it already accounts for a significant percentage of recent cases in several regions.

Intense Symptoms Mark New Variant

Patients infected with NB.1.8.1 are describing a throat pain akin to having “razor blades” lodged within, according to recent reports. Beyond this striking symptom, the illness presents with familiar flu-like characteristics, including nasal congestion, fatigue, a mild cough, muscle aches, and fever. Some individuals are also experiencing gastrointestinal distress, such as diarrhoea and nausea.

The World Health Organization (WHO) has classified NB.1.8.1 as a Variant Under Monitoring (VUM), indicating close scrutiny of its potential for increased transmissibility or disease severity. This variant is a sub-lineage of the Omicron family, continuing the virus’s ongoing evolution.

Global Risk Remains Low, But Vigilance is Key

According to officials at the WHO, the current global risk posed by this strain is considered “low.” Importantly, existing Covid-19 vaccines continue to provide effective protection against severe illness caused by NB.1.8.1. However, the variant’s genetic makeup is raising some concerns among experts.

NB.1.8.1 has undergone at least three genetic recombination events, integrating genetic material from other Covid-19 strains. While recombination is a natural process in viral evolution, each instance carries the potential for a variant with heightened infectivity or increased disease severity. As of May 2024, approximately 69% of the U.S. population had received at least one updated 2023-2024 COVID-19 vaccine dose, according to the CDC (CDC Vaccination Data).

“The global risk from this strain is currently low and that existing Covid-19 vaccines continue to be effective in preventing serious illness caused by the variant.”

—WHO Officials, WHO Report

Preventative Measures Remain Essential

Health authorities are reinforcing the importance of standard preventative measures to curb the spread of NB.1.8.1. These include maintaining physical distancing, practicing good respiratory hygiene, and adhering to all public health advisories. Staying informed and taking proactive steps are crucial in mitigating the impact of this emerging variant.

Continued monitoring and research are essential to fully understand the characteristics of NB.1.8.1 and its potential long-term effects. Public health officials will continue to provide updates as new information becomes available.