New COVID-19 Variant Spreading in the U.S.
Health officials have announced that a new variant of COVID-19 is making its way across the United States. This variant, known as BA.3.2, has been reported in at least 23 countries as of February 11, according to a recent study from the Centers for Disease Control and Prevention (CDC).
The BA.3.2 variant has undergone significant genetic changes, with about 70 to 75 alterations to its spike protein. This spike protein plays a key role in how the COVID-19 virus enters human cells. The CDC has been closely monitoring this variant through its Traveler-Based Genomic Surveillance program.
So far, BA.3.2 has been detected in samples from U.S. travelers, clinical samples from patients, and even in wastewater testing from several states. Specifically, it has been identified in samples from four travelers, five clinical patients, and from wastewater tests across 25 states.
The variant first appeared in the U.S. in June 2025, after being identified in a traveler coming from the Netherlands. Since then, its prevalence has increased, accounting for around 30% of cases noted in Denmark, Germany, and the Netherlands from late 2025 to early 2026.
One concerning aspect of this variant is that it has “immune escape characteristics.” This means it has mutations that could allow it to partially evade the immunity developed from vaccines or previous infections. Experts suggest that while infections might become more likely, they may not necessarily be more severe.
The CDC study points out that BA.3.2 represents a new lineage of the SARS-CoV-2 virus, separating it genetically from other lineages that have been present in the U.S. since January 2024. Researchers believe that the actual prevalence of this new variant may be even higher than reported, as many countries have limited capacity for genomic detection and monitoring.
Studies have also identified two sublineages of BA.3.2, indicating that the virus continues to evolve. Given the potential of BA.3.2 mutations to impact vaccine effectiveness, the CDC emphasizes the importance of ongoing monitoring to understand the virus’s evolution and its implications for public health.
