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Table 1 Model parameters with parameter values taken from published literature [15, 19, 21]. The parameter values without a source (mostly 0) are assumed values.

From: Age groups and spread of influenza: implications for vaccination strategy

Parameter

Description

Baseline value

Source

σ

mean vaccine waning rate

0

 

1/γ

mean incubation period of exposed individuals

1.48

[21]

1/γ 1

mean time to onset of those who had been quarantined

NA

 

ρ

mean recovery rate of untreated infectives

1/2.85

[19]

ρ V

mean recovery rate of vaccinated infectives with ρ Vρ

1/2.85

[19]

ρ 2

mean recovery rate of asymptomatic infectives

1/2.85

[19]

ω

mean immune waning rate

0

 

ϵ

migration rate of the population

0

 

ϵ 1

migration rate of symptomatic infectives

0

 

θ

immigration rate of the population

0

 

θ 1

immigration rate of symptomatic infectives

0

 

q

quarantine rate of unvaccinated exposed individuals

0

 

q V

quarantine rate of vaccinated exposed individuals

0

 

1-ϕ

home withdrawal rate of untreated symptomatic infectives

0

 

1-ϕ1

home withdrawal rate of all "well" individuals

0

 

τ

reduction in infectivity of unvaccinated pre-symptomatic infectives

0.4

 

τ 1

reduction in infectivity of asymptomatic infectives

0.5

[15]

τ 2

reduction factor in contact due to hospital isolation

0

 

κ

reduction in infectivity of vaccinated infectives

0.5

[15]