A TB Model with Infectivity in Latent Period and Imperfect Treatment

Figure 2

Phase plot of 𝑒 versus 𝑖 showing the disease-free equilibrium 𝑄₀ which is stable when 𝑅₀<1 for the parameter values 𝛼=0.3,𝑏=0.0143,𝛽=13,𝛿=0.1,𝛾₁=2,𝛾₂=3,𝑘=0,𝑒₀=0.35,𝑖₀=0.035. Based on these parameters, 𝑅₀≈0.77<1.