US Reports Arrival of New Coronavirus Variant Nimbus from China

A new COVID-19 variant, Nimbus (NB.1.8.1), originating from Omicron, is spreading globally and may cause a summer surge in cases in the US, though it does not appear more severe. It could be more contagious and partially evade immunity, prompting experts to recommend vaccination for vulnerable groups and continued precautions like mask-wearing in crowded indoor settings. The situation underscores the importance of monitoring variants and updating vaccines accordingly.