Fig. 3From: Assessing the mechanism of citywide test-trace-isolate Zero-COVID policy and exit strategy of COVID-19 pandemicThe effect of early detection on the containment of the COVID-19 epidemic. The daily new confirmed cases and the rounds of citywide testing (a) and the cumulative isolated individuals (b) are reported under different lengths of free transmission stage, 8Â days (green color), 9Â days (blue color), 10Â days (purple color), and 11Â days (light red color)Back to article page