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. 2021 Sep 8;8(3):2863–2887. doi: 10.1007/s40808-021-01257-7

Table 1.

Biological significance and parametric values for the crisp model (1)

Parameters Biological significance Values and units Data source
Π Inflow rate 20 1day Assumed
λ Disease transmission rate of susceptible population 0.0002 1day Kassa and Ouhinou (2015)
d Natural mortality rate 0.00004 1day Liu et al. (2008)
q0 Vaccination rate 0.001 1day Assumed
v1 Control parameter 0.001 Lenhart and Workman (2007)
θ1 Saturation constant for information 0.01 Zhang and Liu (2008)
γ0 Loss of the protection rate 0.001 1day Assumed
ψ Vaccine working efficiency rate 0.95 1day Assumed
β Vaccine related immunity rate 0.093 1day Gumel and Ruan (2004)
γ Recovery rate of infective 0.03 1day Gumel and Ruan (2004)
δ Disease induced death rate 0.04 1day Gumel and Ruan (2004)
v2 Control parameter 0.001 Lenhart and Workman (2007)
b Rate of effectiveness due to treatment 0.75 1day Assumed
g Growth rate for information 0.05 1day Misra et al. (2011)
a Natural recovery rate 0.001 1day Assumed
p0 Degradation rate for information 0.05 1day Misra et al. (2011)