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Table 1 Description of model parameters and their associated values and ranges [[15]-[17]]

From: Impact of viral drift on vaccination dynamics and patterns of seasonal influenza

Parameter Description Value (range)
q s ,q v ,q r Fraction of individuals receiving vaccination 0 - 1
σ Vaccine efficacy 0.6 – 0.95
μ Fraction of population vaccinated Variable
m 1 Number of seasons that the protection acquired from natural infection lasts 2 - 8 seasons
m 2 Number of seasons that the protection acquired from vaccination lasts 2 - 4 seasons
γ Recovery rate from infection 0.2 day -1
ϵ j Amplitude of seasonal fluctuation 0.85
α Age since last infection Variable
β s , β v i t , β r a
i = 0, 1, , m 2 - 1
Baseline transmission rates of infection for susceptible, vaccinated, and recovered individuals, respectively β s  = 150/N year -1 (N: total population size)
β ¯ v t , β ¯ r Baseline transmission rates of infection for previously vaccinated and recovered individuals, respectively, who also received vaccine for the current season Variable
κ s (t) = β s  · P s (t) Transmission rate of infection for susceptible class Variable
κ v 0 t = β v 0 t P s t Transmission rate of infection for newly vaccinated from susceptible class Variable
κ v i t = β v i t P v t Transmission rate of infection for previously vaccinated individuals who received their last vaccine i seasons ago Variable
i = 1, 2, , m 2 - 1
κ ¯ v t = β ¯ v · P v t Transmission rate of infection for previously vaccinated individuals who also received vaccine for the current season Variable
κ r (t, a) = β r (a) · P r (t) Transmission rate of infection for recovered individuals with the recovery age α since last infection Variable
κ ¯ r t = β ¯ r · P r t Transmission rate of infection for recovered individuals who received vaccine for the current season Variable