New COVID variant NB.1.8.1 spreads across continents amid calls for vigilance
Taiwan
Global Virus Network Jun 6 2025 The Global Virus Network (GVN) is closely monitoring the emergence of a newly identified SARS-CoV-2 variant, NB.1.8.1, a sublineage of the Omicron family. This variant was first identified in January 2025 and has rapidly spread across Asia and into other regions, including parts of the United States. The World Health Organization (WHO) has designated NB.1.8.1 as a Variant Under Monitoring due to its increasing prevalence and potential public health implications.
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