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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Math Biosci. 2012 Mar 1;236(2):77–96. doi: 10.1016/j.mbs.2012.02.003

Figure 5.

Figure 5

TB model by Murphy et al. which captures TB dynamics in high-risk and low-risk countries. The compartments of SEI model are subdivided into two: SN, EN, IN and SS, ES, IS, where subscript N stands for neutral and denotes individuals without a susceptible genotype, and subscript S stands for susceptible and denotes individuals with a susceptible genotype. βij represents progression rate of a susceptible individual with genetic susceptibility i to active TB case with genetic susceptibility j, where i, j ∈ {S, N}. The probability pi represents direct progression rate to active TB, and ri represents reactivation rate of latent TB. The population is represented by P = SN + EN + IN + SS + ES + IS.