Fig. 4

Effect of the four factors on the growth rate of patients and on the cumulative number of patients. Legend: The solid lines represent the growth rate of patients; scales are indicated on the left axis of the coordinate. The dotted lines represent the cumulative number of patients; scales are indicated on the right axis of the coordinate plane. The 25–75% quantiles are indicated by grey shading. a, b, c, and d represent the respective effects of R₀, TOI, IOI, and IR on the outbreak, respectively. The above analyses were performed under the following conditions: the total number of individuals exposed in the population was 500; the R₀ for b, c, and d was 3; and the computer simulation was carried out 500 times