Fig. 4From: Evaluating the impact of biannual school-based and community-wide treatment on urogenital schistosomiasis in NigerPrevalence a and mean intensity b of Schistosoma haematobium infection status by study arm over time (9–12 year-olds cross-section only). The change in overall prevalence and mean intensity of S. haematobium at each time point from the start of the project at baseline to the final Year 5 of the study is shownBack to article page