COVID-19 Variant NB.1.8.1 Symptoms
- A new COVID-19 variant, NB.1.8.1,is gaining attention worldwide as cases rise,notably in China and Hong Kong,where hospitalizations are increasing.
- According to the WHO, the prevalence of NB.1.8.1 has quadrupled in the last month across 22 countries, jumping from 2.5% to 10.7% of samples by late April.
- Amy Edwards, an assistant professor at Case Western Reserve University, suggests this new variant could lead to a summer surge in U.S.
Stay informed on the NB.1.8.1 COVID variant. This article dives into the concerning spread of NB.1.8.1, especially across China and Hong Kong, and assesses the potential for a summer surge. We examine the symptoms of this variant, highlighting whether they differ from previous strains, along with expert insights on the role of COVID-19 vaccination in providing protection. Discover how the WHO is monitoring this evolving situation and what public health officials advise. In addition, uncover the latest vaccination recommendations to protect yourself and those around you. For up-to-date news and analysis, News Directory 3 keeps you informed – explore how NB.1.8.1 might affect your health. Discover what’s next …
NB.1.8.1 COVID Variant: Summer Surge Possible?
Updated May 30, 2025
A new COVID-19 variant, NB.1.8.1,is gaining attention worldwide as cases rise,notably in China and Hong Kong,where hospitalizations are increasing. The World Health Organization (WHO) is now monitoring this variant.
According to the WHO, the prevalence of NB.1.8.1 has quadrupled in the last month across 22 countries, jumping from 2.5% to 10.7% of samples by late April. The Centers for Disease Control and Prevention (CDC) has also detected the NB.1.8.1 variant at several U.S. airports.
Dr. Amy Edwards, an assistant professor at Case Western Reserve University, suggests this new variant could lead to a summer surge in U.S. COVID-19 cases. Though, the WHO reports that current surveillance indicates no increased severity associated with NB.1.8.1 compared to other circulating variants.
Dr. Mark Rupp, a professor at the University of Nebraska Medical Center, believes existing COVID-19 vaccines should still offer protection against severe illness from NB.1.8.1. He noted the variant is related to Omicron, suggesting the current and upcoming vaccines should remain effective.
“There have been late spring or summer surges in past years, and this variant could push one this year,” said Dr. Edwards.
Rupp emphasized the importance of accessible and reimbursed vaccines, especially for those at high risk.He also noted that new variants and waning immunity often contribute to spikes in virus activity.
Symptoms of NB.1.8.1 appear consistent with previous COVID-19 variants, including nasal congestion, sore throat, fatigue, headache, cough, muscle aches, fever, nausea, diarrhea, and loss of taste or smell.
Edwards advises that individuals experiencing illness should take precautions to prevent further spread, such as staying home and wearing masks. She stressed that protecting vulnerable populations remains crucial.
“NB.1.8.1 is from a lineage of omicron, so we expect that it is indeed related closely enough to variants targeted by the current vaccine and the vaccine proposed for the coming season,” said Dr. Rupp.
What’s next
As COVID-19 continues to evolve, ongoing monitoring and vaccination efforts will be essential to mitigating the impact of new variants like NB.1.8.1. Public health officials will continue to track the spread and severity of the variant.