Figure 9.

a) Two-strain model by Blower et al. b) Two-strain model by Castillo-Chavez et al. β^* is the probability that treated individuals become infected by one DR-TB individual per contact per unit time. v′ is the progression rate from latent TB to active TB for DR-TB cases. ${\mu }_T^{\prime }$ is the mortality rate due to DR-TB. p and q are the proportions of infected individuals who did not complete treatment and became latent DS-TB and DR-TB case respectively.