Fig. 4From: Effects of prolonged incubation period and centralized quarantine on the COVID-19 outbreak in Shijiazhuang, China: a modeling studyThe estimated incubation period (A) and serial interval (B) for COVID-19 patients stratified by sex and age. Incubation period was presented by mean and 95% confidence interval (95% CI). Serial interval was presented by mean and 0.025th, 0.975th percentiles (0.025th, 0.975th)Back to article page