May 29, 2025 — A new variant of the SARS-CoV-2 virus, officially named NB.1.8.1, is raising concerns among public health authorities around the world. Though classified as a sublineage of the well-known Omicron variant, NB.1.8.1 has exhibited unique characteristics that suggest increased transmissibility, prompting renewed caution and monitoring by global health organizations.What Is the NB.1.8.1 …