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Figure 4 | Theoretical Biology and Medical Modelling

Figure 4

From: Assessing the effects of multiple infections and long latency in the dynamics of tuberculosis

Figure 4

The fraction of infectious individuals y ¯ as function of transmission coefficient β. The curve on the right (labelled by 1) corresponds to the values given in Table 1 (resulting in γ <γ+); and for the curve on the left (labelled by 2), we changed only γ, γ = 0.01588 years-1 (resulting in γ = γ+). In the curve representing the backward bifurcation, the solid line corresponds to the stable branch ( y ¯ + ) and the dotted line to the unstable branch ( y ¯ ). Here we have q = 1 and p >p0. In this case backward bifurcation occurs over a narrow range ( β c 1 = 4.7343 and β 0 = 5.2676 both in years-1).

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