
New COVID-19 Variant NB.1.8.1 detected in U.S., under monitoring by WHO
WASHINGTON, D.C. – A new COVID-19 variant, designated NB.1.8.1, has been detected in the United States and is currently classified as a “variant under monitoring” by the World Health Organization (WHO). First identified in late January 2025, NB.1.8.1 is a …