Stability of a Two-Strain Tuberculosis Model with General Contact Rate

Figure 5

Trajectories of system (2.2) when 𝛽₁(𝑁)=𝛽₁, 𝛽₂(𝑁)=𝛽₂, 𝛽₁=𝛽₂=0.001, 𝑑₁=0.02, 𝑑₂=0.07, so that 𝑅₁<1, 𝑅₂<1. It shows that the disease-free equilibrium 𝑃₀ is stable.