A Mathematical Study of a TB Model with Treatment Interruptions and Two Latent Periods

Figure 6

Trends of the reproduction numbers 𝑅₀, 𝑅_𝑡, and 𝑅_𝑡𝑖. The green dash-dotted line, the red dashed line, and the blue solid line correspond to the reproduction numbers 𝑅₀, 𝑅_𝑡, and 𝑅_𝑡𝑖, respectively. 𝛽₂ is varied from 2×10⁻⁷ to 5×10⁻⁷. Other parameter values can be seen in Table 1. Therefore, Δ₃=0.1513>0.