FIGURE 2.

Simulated epidemic curves for five populations, when there is (A) no vaccine effect, (B) an effective all-or-none vaccine, and (C) an effective leaky vaccine. Darker lines correspond to areas with lower vaccination coverage. Corresponding effective reproductive numbers $\left(R\right)$ are included with vaccination coverage $\left(x_i\right)$ in the legend. A, No vaccine effect ($\varphi$= 0); B, All-or-none vaccine ($\varphi$= 0.8); C, Leaky vaccine ($\varphi$= 0.8)