BrazilNetherlandsPopulation DensityPrevalenceQuestionnairesSeasonsRiversCross-Sectional StudiesMoroccoPsychodidaeSocioeconomic FactorsUlmusTreesInsect VectorsIndians, South AmericanRisk FactorsGenotypeInfant, NewbornCross-Cultural ComparisonUrban PopulationOphiostomaCohort StudiesTranslationsNetherlands AntillesEndemic DiseasesBertholletiaEpidemiologic MethodsIncidencePolymerase Chain ReactionPhylogenyAge DistributionNational Health ProgramsSimuliidae