Table 1.

Estimates (95% confidence intervals) of parameters for different means of the generation interval.

E[GI][1]	3	4	5 (baseline)	6	7
b	1.19 (1.16,1.22)	1.32 (1.29,1.35)	1.49 (1.45,1.52)	1.68 (1.64,1.73)	1.92 (1.87,1.96)
a	0.35 (0.32,0.38)	0.33 (0.30,0.36)	0.30 (0.27,0.33)	0.28 (0.25,0.30)	0.25 (0.23,0.28)
$R_{m,\tau }^{\alpha }$[2]
m = 1	0.87 (0.35,1.44)	0.85 (0.30,1.44)	0.82 (0.24,1.45)	0.80 (0.19,1.46)	0.78 (0.14,1.47)
m = 2	0.95 (0.70,1.22)	0.95 (0.69,1.21)	0.94 (0.68,1.21)	0.93 (0.66,1.20)	0.91 (0.64,1.20)
m = 3	0.93 (0.78,1.09)	0.91 (0.76,1.07)	0.89 (0.75,1.04)	0.87 (0.73,1.02)	0.85 (0.72,0.99)
m = 4	0.95 (0.88,1.03)	0.94 (0.87,1.01)	0.92 (0.85,1.00)	0.90 (0.83,0.98)	0.88 (0.81,0.96)
m = 5	0.90 (0.85,0.94)	0.86 (0.82,0.91)	0.83 (0.79,0.87)	0.81 (0.77,0.85)	0.79 (0.75,0.83)
m = 6	1.10 (0.98,1.23)	1.00 (0.90,1.12)	0.92 (0.82,1.02)	0.84 (0.76,0.93)	0.79 (0.71,0.87)
$R_{m,\tau }^{\delta }$[3]
m = 1	1.15 (0.46,1.90)	1.24 (0.44,2.11)	1.35 (0.40,2.39)	1.49 (0.36,2.73)	1.66 (0.31,3.12)
m = 2	1.26 (0.93,1.61)	1.39 (1.02,1.78)	1.55 (1.12,1.99)	1.73 (1.24,2.25)	1.94 (1.36,2.55)
m = 3	1.23 (1.02,1.44)	1.33 (1.11,1.57)	1.47 (1.23,1.72)	1.63 (1.36,1.90)	1.81 (1.52,2.11)
m = 4	1.25 (1.16,1.35)	1.37 (1.27,1.49)	1.52 (1.40,1.65)	1.69 (1.55,1.83)	1.88 (1.72,2.04)
m = 5	1.18 (1.12,0.24)	1.26 (1.20,1.33)	1.37 (1.31,1.44)	1.51 (1.44,1.59)	1.68 (1.60,1.76)
m = 6	1.45 (1.29,1.62)	1.47 (1.31,1.64)	1.51 (1.35,1.68)	1.58 (1.41,1.75)	1.67 (1.50,1.85)

[1] The mean of the generation interval (days). [2] The effective reproduction numbers of the Alpha variant with the time window τ = 7 days. [3] The effective reproduction numbers of the Delta variant with the time window τ = 7 days.