Skip to main content

Table 1 Parameters used in the SEIAR and SEIAR-CQFH models

From: Quantitative assessment of the effectiveness of joint measures led by Fangcang shelter hospitals in response to COVID-19 epidemic in Wuhan, China

Parameter

Implication

Value

Sources

β0

The transmission rate of symptomatic infectious before Jan 23

0.43 (95%CI: 0.428–0.431)

Estimated

βend

The minimum transmission rate of symptomatic infectious under interventions after Jan 23

0.05 (95%CI: 0.049–0.051)

Estimated

r

Exponential decreasing rate of transmission rate of symptomatic infectious under interventions after Jan 23

0.072 (95%CI: 0.0715–0.0728)

Estimated

fE

The fitted transmission rate with respect to exposed individuals

1/3

Ref [7]

fA

The fitted transmission rate with respect to asymptomatic infectious

1/3

Ref [7]

fC

The fitted transmission rate with respect to home isolated symptomatic infectious

1

Assumed

1/σ

Incubation period

5.2

Ref [8,9,10]

ρ

The probability that each exposed individual

enters the symptomatic compartments

0.82

Ref [11]

1/γI

The average duration of the infection of symptomatic infectious

12

Ref [10]

1/γA

The average duration of the infection of asymptomatic infectious

7

Ref [10]

1/γC

The average duration of the infection of home isolated symptomatic infectious

11

Ref [10]

1/γQ

The average isolated period of quarantine isolated symptomatic infectious

14

Ref [10]

1/γF

The average hospital day of symptomatic infectious in Fangcang shelter hospitals

20

Ref [10]

1/γH

The average hospital day of symptomatic infectious in hospitals

10

Ref [10]

αI

Disease-induced death rate of symptomatic infectious estimated

0.0087 (95%CI: 0.007–0.01)

Estimated

αH

Disease-induced death rate of symptomatic infectious in hospitals

0.0057 (95%CI: 0.0051–0.0061)

Estimated

1/δic

The average day from symptom onset to clinical diagnosed after Jan 23

1

Ref [10]

1/δcfh

The average day from clinical diagnosed to laboratory confirmed

1

Ref [10]

δcq

The moving rate from community isolation to quarantine points isolation

0.2 (95%CI: 0.19–0.21)

Estimated

ρQ

The deteriorating rate from mild or moderate to severe illness in quarantine points

0.2

Ref [12]

ρF

The deteriorating rate from mild or moderate to severe illness in Fangcang shelter hospitals

0.05

Ref [12]

θ

The ratio of the beds used to isolate symptomatic infectious individuals in quarantine points

0.09 (95%CI: 0.08–0.11)

Estimated

  1. Note: Reference: Ref