A Heterogeneous Branching Process with Immigration Modeling for COVID-19 Spreading in Local Communities in China

Figure 3

The empirical distribution of the positive serial time with 329 confirmed cases. The reference fitted distributions are Gamma distribution with mean 4.43 and variance 10.23 (the blue line) and the Weibull distribution with mean 4.45 and variance 10.31 (the red dash-dotted line). The inserted is the histogram of all serial times for 411 confirmed cases, containing nonpositive ones.