Table 1.

Parameters of tuberculosis transmission models

Symbol	Definition	Value
β	Transmission coefficient	variable (yrs−1)
ν	Proportion of pulmonary TB cases	0.75
μ	Death and Birth rate	1/80 yrs−1
δ	Rate at which individuals leave P compartment	2 yrs−1
ϕ	Fraction of infected population developing active TB	0.05
σ	Reinfection factor	0.5
ω	Rate of endogenous reactivation	0.0003 yrs−1
τ	Inverse of time to detection	4.26 yrs−1
κ	Proportion of detected cases in a year	0.87
δ T	Inverse of treatment length	1.36 yrs−1
ϕ T	Fraction of treatment default and failure	0.04
αa	Low-risk factor	0.15 or variable
γa	Proportion of low-risk group	0.98 or variable

^a- Parameter used only in the heterogeneous model.