Fig. 4: Temporal estimates of forward generation time (GT) distributions.

a The temporal estimates of mean of forward GT. b The temporal estimates of standard deviation of forward GT. The dots and segments showed the mean estimates and the corresponding 95% confidence intervals (CIs), respectively. Red arrow indicates lockdown in Wuhan and the implementation of public health social measures (PHSMs) since January 23, 2020. Sample size (number of transmission pairs) in each time window (X-axis from left to right) for the mean and SD and their corresponding 95%CIs of GT referenced by infector onset: 116, 110, 146, 191, 218, 248, 257, 275, 291, 295, 270, 265, 231, 218, 188, 166, 163, respectively.