Fig. 6From: Evaluating survey designs for targeting preventive chemotherapy against Schistosoma haematobium and Schistosoma mansoni across sub-Saharan Africa: a geostatistical analysis and modelling studyComparisons of numbers of undertreated schools sampling 5 schools per per district vs 1 or 5 schools per subdistrict for S. haematobium (a) and S. mansoni (b) and numbers of overtreated schools for S. haematobium (c) and S. mansoni (d)Back to article page