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Total number of Biomphalaria sudanica collected at a village was not significantly correlated with the prevalence of Schistosoma mansoni in humans either before or after the drug treatment intervention (before: Pearson r = −0.0369, P = 0.460; after: Pearson r = −0.009, P = 0.49). Yellow = persistent hotspot villages; blue = responding villages. This figure appears in color at www.ajtmh.org.
