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Theory and Modern Applications

Table 2 Initial values of Model (1)

From: A mathematical model for evaluating the impact of nonpharmaceutical interventions on the early COVID-19 epidemic in the United Kingdom

Initial value

Description

Unit

Estimated

Std

95%CI

Source

S(0)

The initial size of susceptible population

Number

66,573,504

–

–

[31]

E(0)

The initial size of

Number

11.3230

1.1634

[9.0427, 13.6033]

MCMC

I(0)

The initial size of symptomatic infectious population

Number

4.1686

0.3280

[3.5257, 4.8115]

MCMC

A(0)

The initial size of asymptomatic infectious population

Number

1.4524

0.3050

[0.8546, 2.0502]

MCMC

\(S_{q}(0)\)

The initial size of quarantined susceptible population

Number

0

–

–

Assume

\(E_{q}(0)\)

The initial size of quarantined exposed population

Number

0

–

–

Assume

H(0)

The initial number of hospitalized individuals

Number

2

–

–

[2]

R(0)

The initial number of recovered individuals

Number

0

–

–

[2]

D(0)

The initial number of dead individuals

Number

0

–

–

[2]