
New COVID Variant NB.1.8.1 Sparks Concern for Summer Surge in the US
2025-06-16
Author: Ken Lee
A New Threat Emerges: The NB.1.8.1 Variant
The COVID-19 landscape in the U.S. may be on the brink of change as health experts raise alarms over a new variant that could potentially ignite a summer wave. As the country experiences a lull in COVID-19 infections, it seems the protective immunity among the population may be diminishing, coinciding with the rise of a new and more infectious variant called NB.1.8.1.
What is NB.1.8.1?
This new variant, a descendant of Omicron, has been designated by the World Health Organization as a 'variant under monitoring.' Key mutations in NB.1.8.1 allow it to bind more easily to human cells, potentially evading some immune defenses. While recent data show a worrying increase in infections and hospitalizations in parts of Asia, NB.1.8.1 does not appear to lead to more severe illness, with existing vaccines likely remaining effective.
Fast-Rising Cases in the U.S.
In the latest figures from the CDC, NB.1.8.1 is already responsible for 37% of cases in the United States, up from just 15% two weeks ago. Experts predict it is set to surpass the current leading variant, LP.8.1. However, these estimates come with caution, as they rely on limited data, and there remains a wide range of uncertainty regarding actual proportions.
Growing Concerns Across the Atlantic
Europe is experiencing a similar trend, with the European Centre for Disease Prevention and Control highlighting a slow rise in COVID-19 cases. Although they do not foresee any substantial health risks from NB.1.8.1 compared to other Omicron variants, there's recognition that population immunity may have ebbed—especially among vulnerable groups—making them more susceptible to the virus as activity increases.
Challenges for U.S. Public Health Politics
The U.S. faces unique challenges as its COVID-19 policies are fraught with confusion. With anti-vaccine advocate Robert F. Kennedy Jr. now leading health initiatives, there are fears that access to vaccinations could become limited for high-risk groups. The former administration's funding cuts for public health efforts add another layer of complexity to an already challenging situation.
A Turbulent Time for Guidance and Policy
This turbulent period has led to resignations within the CDC, including an official responsible for COVID-19 data, who expressed doubts about the objectivity of the current policies. As discussions over vaccine recommendations heat up at the CDC, the looming summer may bring dangers associated with a resurgence in infections as officials battle conflicting views on vaccine efficacy and public health measures.