Table 2.

The sensitivity indices of ${\mathcal{R}}_0$.

Parameter	Chongqing	Tianjin	Description
β	0.9148	0.9280	Transmission rate from exposed to susceptible
β1	0.0852	0.0720	Transmission rate from infected to susceptible
d	1.16 × 10−4	1.16 × 10−4	Latent period rate
δ	−0.9148	−0.9280	Clinical outcome rate
μ	−2.18 × 10−4	−2.15 × 10−4	Human birth/death rate
c	−0.0852	−0.0720	Transfer rate from infectious to un-infectious