It's my understanding that the jump in cases is more attributable to a change in diagnostic procedure than a rapid increase in infections.

Originally Posted By: Ren

"Health authorities in China’s Hubei province – the epicentre of the coronavirus epidemic – reported on Thursday 14,840 new confirmed cases, almost 10 times the number reported a day earlier, and new deaths attributable to the contagion rose to 242, more than double on the day."

https://www.scmp.com/news/china/society/...e-new-confirmed