A new COVID-19 variant, NB.1.8.1, is spreading rapidly in the United States, accounting for 37% of cases as of early June. The World Health Organization has evaluated the public health risk posed by this variant as “low” and advised that currently approved vaccines are expected to remain effective against it.
The new variant was first detected in China in January and was initially found to account for only 0% of cases in the US until May. However, its prominence has increased significantly since then, with projections suggesting it will be the second most common strain in the country.
While there is no specific information on symptoms unique to this variant, those infected have reported a severe sore throat, often described as feeling like being “struck by a razor blade.” Common COVID-19 symptoms include fever, cough, shortness of breath, and fatigue.
The Centers for Disease Control and Prevention (CDC) advises that people should seek medical care if they experience trouble breathing, persistent pain or pressure in the chest, new confusion, or inability to wake or stay awake. The CDC also recommends that everyone over 6 months old get vaccinated against COVID-19, with certain groups recommended to receive booster shots.
To protect themselves from this variant and other COVID-19 strains, individuals can follow these steps: get vaccinated, wear a mask in public, maintain social distancing, and wash their hands frequently. The CDC also offers free COVID-19 testing at over 19,000 locations across the country through its Increasing Community Access to Testing, Treatment and Response program.
Key statistics:
* NB.1.8.1 variant accounts for 37% of cases in the US as of early June
* Currently approved vaccines are expected to remain effective against this variant
* The CDC recommends that everyone over 6 months old get vaccinated against COVID-19
* Free COVID-19 testing is available at over 19,000 locations across the country
Source: https://eu.usatoday.com/story/news/health/2025/06/23/new-covid-variant-2025-symptoms/84317260007