Table 1 The definition and values of parameters in SEIAR model of COVID-19 in Jilin Province, China

β₁

Infection rate coefficient (before February 1)

Person^− 1·day^− 1

6.7865 × 10^− 9

Curve Fitting

β₂

Infection rate coefficient (after February 1)

Person⁻¹·day⁻¹

2.0519 × 10^− 10

Curve Fitting

k

Coefficient of Transmissibility of A relative to I

1

1

literature [21]

p

Proportion of asymptomatic infections

1

0.04

Actual data

ω

Relative rate of incubation period of I

day⁻¹

0.1

Actual data

ω’

Relative rate of latent period of A

day⁻¹

0.1

literature [21]

γ

Coefficient of time between onset and admission

day⁻¹

0.33

Actual data

γ’

Infection period coefficient

day⁻¹

0.33

literature [21]

f

Fatality rate

1

0

Actual data