A new COVID-19 variant, NB.1.8.1, originating in China, has been detected in several US states among international travelers. While causing a surge in hospitalizations in China, Asia, and Hong Kong, the US currently shows no major increase in cases. The variant's higher infectivity is concerning, prompting the FDA to consider vaccine updates. The CDC is monitoring the situation closely, utilizing airport testing data to track the variant's spread.

Prepared by Olivia Bennett and reviewed by editorial team.