Highlights: What should we know about the Omicron variant XBB1.5 and should we be concerned?

A new COVID-19 variant called XBB1.5 is spreading fast in the U.S. and parts of Europe, leading to concerns about a surge in infections. What are some of its symptoms? Should we in China be concerned? Zhou Hui, a physician of the No. 2 Hospital Affiliated to Zhejiang University's School of Medicine, joined "The Chat Room" and told us more about XBB1.5.

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