Table 1.

Parameters used in the main text

Parameter	Description	Value (range)
β(t)	Transmission rate with time	$\beta \left(t\right)=\frac{{\mathbf{R}}_t}{\left(\frac{{\theta }_a(1-f_I)}{{\gamma }_A}+\frac{f_I}{{\gamma }_I}+\frac{{\theta }_p{f}_I{f}_P}{\omega }\right)}$
R0	Basic reproduction number	2.2 [34]
$\frac{1}{\delta }$	Incubation period	5.1 days [35]
$\frac{1}{{\gamma }_I}$	The infectious period for symptomatic infection	2.3 days [24]
$\frac{1}{{\gamma }_A}$	The infectious period for asymptomatic infection	2.3 days [assumed]
fI	The proportion of symptomatic infection	0.8 [36]
$\frac{1}{\omega }$	The delay days between severe infection and hospitalization	2.7 days [24]
$\frac{1}{\mu }$	Hospital stay period for severe infection	8 days [24]
fP	The propotion of infection requiring hospitalization	0.3 [24]
fD	The proportion of severe infection to die after hospital stay	0.065[calculated] [31]
θa	Infectious factor for asymptomatic infections	1.0 [32]
θp	Infectious factor for severe infections	1.0 [assumed]
Im	Medical resources	0.0023 [calculated] [37]
It	Tolerance parameter for infection	$\frac{100}{N}$ [assumed]
αs	Suppression coefficient	[0.1,0.4] [assumed]
αm	Mitigation coefficient	[0.5,0.8] [assumed]