Topography, MedicalSpatial AnalysisGeographic Information SystemsGeographic MappingGeographyIncinerationBayes TheoremWorld War IHookworm InfectionsModels, StatisticalAncylostomatoideaSoil PollutantsAfrica, WesternSmall-Area AnalysisEnvironmental MonitoringHelminthiasisSoilEndemic DiseasesDemographyClimateMalariaPrevalenceCluster AnalysisEcosystemModels, TheoreticalComputer SimulationRisk Factors