Fig. 8.

Goodness of fit (green curves) and variations in cumulative number of reported cases (A), recovery cases (B), and suspected cases (C) for Guangdong province. (D) Variation in the effective reproduction number with parameter $r_3$ in detection rate function ${\delta }_I\left(t\right)$. Here the detection rate function is changed by varying the exponential decreasing rate $r_3$, representing the variation in intensity of control measures. $r_{30}$ denotes the estimated baseline value of $r_3$.. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)