Before revision:  These\langle \rangle\lesssim \langle \rangle results suggest that the early containment of the disease within China was close to optimal and could not have been significantly improved upon .
After revision:  These\langle \rangle\lesssim \langle \rangle/2 , while for large l the growth is found to be exponential. Together with available data, these results suggest that the early containment of the disease within China was close to optimal and could not have been significantly improved upon .