Data from the Centers for Disease Control and Prevention show cases of norovirus, the highly contagious stomach bug, are surging in the U.S.

reported a surge in cases in some parts of the US. Recent figures show that 91 outbreaks of the virus were reported during the week of December 5, an increase of 22 from the previous week.

China has not seen such a wave of COVID-19 infections since January 2020. The delta variant of the deadly virus has spread in China to areas that have been declared ‘virus free’ for many ...