New COVID Variant NB.1.8.1: Razor Blade Throat & What You Need to Know!
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COVID-19: The Latest Variant and Its Symptoms
A new COVID-19 variant, NB.1.8.1, is rapidly spreading across the United States and causing concern among health officials. This variant, a descendant of the Omicron variant, is characterized by a particularly painful sore throat, often described as "razor blade throat."
What is NB.1.8.1?
NB.1.8.1 is derived from the XVD.1.5.1 variant and was first detected in China in January 2025. The World Health Organization (WHO) is monitoring the variant, considering it a potential threat but not yet a major "variant of concern."
Prevalence in the US
The Centers for Disease Control and Prevention (CDC) reports that NB.1.8.1 accounts for approximately 37% of new COVID-19 cases in the U.S. as of early June 2025, making it the second most dominant strain behind LP.8.1. Experts believe it may be more transmissible than previous variants.
Symptoms and Severity
Besides the intense sore throat, symptoms of NB.1.8.1 appear similar to those of other COVID-19 variants. While the variant seems more contagious due to changes in the spike protein allowing it to attach more easily to cells, current data suggests it is not more severe. The WHO states that existing COVID-19 vaccines should remain effective against symptomatic and severe disease caused by this variant.
What Can You Do?
- Stay informed about the latest recommendations from the CDC and WHO.
- Consider getting an updated COVID-19 booster shot, especially if you are at high risk.
- Practice good hygiene, including frequent handwashing and covering coughs and sneezes.
- Consider wearing a mask in crowded indoor settings.
Public health experts emphasize that there is no cause for serious alarm at this point. Continue to follow preventative measures to protect yourself and others from contracting COVID-19.