Fig. 3.

The impact of different types mass drug administration coverage on: (a) and (b) the prevalence; (c) and (d) the prevalence after 5 years; of an SIS model over multiple rounds of treatment, for different infection rates, β when using a coverage of 70%. In each plot the schemes we expect to have high systematic non-coverage are shown in red, those that are more random are in blue, and those with some systematicness are shown in green. We take the rate of recovery, γ = 0.15. Lines are averaged over 1000 simulations and are scaled by the prevalence attained when using the random coverage scheme. For reference, the random coverage scheme attains a prevalence 0.0003 for β = 0.2 and of 0.03 for β = 0.25.