Before revision: Recent analysis of  COVID-19 data from China showed that the number of confirmed cases followed a subexponential power-law increase, with a growth exponent of around 2.2 {\it } {\bf   .
After revision: Recent analysis of COVID-19 data from China showed that the number of confirmed cases followed a subexponential power-law increase, with a growth exponent of around 2.2 {\it Science} {\bf .