Table 1 Parameters of the Wuhan COVID-19 outbreak models.

From: A modified SEIR model to predict the behavior of the early stage in coronavirus and coronavirus-like outbreaks

Quantity

Description

Type

Value

Initial value

References

F(t)

Zoonotic/day

Stepwise function

{0, 10}

10

N(t)

City population

Computed

14 MM

South China Morning Post (2020)13

s(t)

Susceptible

Computed

0.9999

e(t)

Exposed

Computed

0.0001

i(t)

Infected

Computed

0

r(t)

Recovered

Computed

0

d(t)

Expected to die

Computed

0

p(t)

Perception of risk

Computed

0

\(\kappa \)

Strength of response

Constant

(0, 1117.3)

He et al. (2013)3

\(\alpha \)

Governmental action strength

Stepwise function

{0, 0.4239, 0.8478}\(^a\)

0

Lin et al. (2020)8

\(\beta _0\)

Baseline transmission rate

Stepwise function

{0.5944, 1.68}

0

Lin et al. (2020)8

\(\mu \)

Emigration rate

Stepwise function

{0, 0.0205, 0}

0

South China Morning Post (2020)13

\(\sigma ^{-1}\)

Mean latent period

Constant

3 days

0

Wu et al. (2020)14

\(\gamma ^{-1}\)

Mean infectious time

Constant

5 days

0

Wu et al. (2020)14

\(\lambda ^{-1}\)

Mean time of public reaction

Constant

11.2 days

0

He et al. (2013)3 & Lin et al. (2020)8

\(g^{-1}\)

Mean time in unit d

Constant

8

0

He et al. (2013)3

\(\phi \)

Case fatality proportion

Constant

(0.5%, 20%)

0

  1. aFrom January 23 to January 29, 2020, \(\alpha =0.4239\). After January 30, 2020, \(\alpha =0.8478\).