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Table 1 State variables for the SEIR equation models

From: Early rigorous control interventions can largely reduce dengue outbreak magnitude: experience from Chaozhou, China

Variables

Explanation

Values

Sources

Sh

Number of susceptible humans

-

-

Eh

Number of exposed humans

-

-

Ih

Number of infectious humans

-

-

Rh

Number of recovered humans

-

-

Sv

Number of susceptible mosquitoes

-

-

Ev

Number of exposed mosquitoes

-

-

Iv

Number of infectious mosquitoes

-

-

Nh

Total human population size

600,000

statistic yearbook

Nv

Total mosquito population size

-

-

Ψh

Per capita birth rate of humans. Time−1

1/(70*360)

Estimation

Sv(0)

Initial values of susceptible mosquitoes

1,987,800

MCMC Fitting

Ev(0)

Initial values of exposed mosquitoes

434

MCMC Fitting

Iv(0)

Initial values of infectious mosquitoes

20

MCMC Fitting

δ

Reduction rate of mosquitoes due to control measures. Time_1

varied

MCMC Fitting

βhv

Effective contact rate from an infected human to a susceptible mosquito. Dimensionless

0.576

MCMC Fitting

βvh

Effective contact rate from an infected mosquito to a susceptible human. Dimensionless

0.426

MCMC Fitting

νh

Per capita rate of progression of humans from the exposed state to the infectious state. Time_1

1/5

[13]

νv

Per capita rate of progression of mosquitoes from the exposed state to the infectious state. Time_1

1/10

[13]

γh

Per capita recovery rate for humans from the infectious state to the recovered state. Time_1

1/6

[13]

μh

Per capita death (and emigration) rate for humans. Time_1

1/(70*360)

Estimation

μv

Density-independent death rate for mosquitoes. Time_1

1/21

[13]

Kv

Carrying capacity of mosquitoes. Mosquitoes

28,200

MCMC Fitting

rv

Natural growth rate of mosquitoes. Time_1

0.013

MCMC Fitting

A

Scale parameter

0.373

MCMC Fitting

  1. -: The parameters were described in the methods section