Fig. 2

The impact of testing volume V and testing start time T on epidemic transmission. a shows the impact on the infection peak. The red and blue color refer to high and low peak values, respectively. b shows the impact on the arrival time of infection peak. The blue color means that the epidemic breaks out very early, while the red color means the opposite. In region I of (a), the peak values were smaller than 0.005. In region I of (b), the peak times were larger than 130 time steps. Starting testing early and increasing daily testing volume could suppress the epidemic transmission