Fractional reduction in costs associated with the optimal vaccination strategy.

Each region shows the cost-savings realized in a campaign that maintains seroprevalence at the 0.5 herd immunity threshold. Subfigures show model output when host home range is 1 km2 (panel a: k = 0.01) and 10 km2 (panel b: k = 0.1). Regions are bounded above and below by the reduction in costs that occur when the duration of vaccine infection is 1 year (δv = 1), and 1 month (δv = 12). The red line depicts the fractional reduction in vaccine baits predicted by the spatially homogeneous model. Other parameters: d = 0.416 yr−1, ξ = 0.25 km, Cf = 18.16 km−1, Cb = 2.12.