Fig. 3From: Effects of prolonged incubation period and centralized quarantine on the COVID-19 outbreak in Shijiazhuang, China: a modeling studyCumulative density functions of the estimated incubation period (Weibull distribution) and serial interval (Gamma distribution) of COVID-19 cases in Shijiazhuang for all cases (A), immediately confirmed cases (B), and later becoming symptomatic cases (C)Back to article page