Ascaris lumbricoidesAscarisAscariasisTrichurisHelminthiasisIntestinal Diseases, ParasiticTrichuriasisAncylostomatoideaHookworm InfectionsHelminthsAnthelminticsParasite Egg CountMebendazoleAlbendazoleAntinematodal AgentsAscaris suumProtozoan InfectionsNecator americanusNematode InfectionsFecesPyrantel PamoateToilet FacilitiesSoilEcuadorAntigens, HelminthThiabendazoleParasitic DiseasesAntibodies, HelminthAncylostomaNematodaNecatoriasisLevamisoleSanitationPrevalenceHelminth ProteinsStrongyloides stercoralisToxocaraParasitologyParasitesDNA, HelminthAncylostomiasisHygieneStrongyloidiasisRural HealthGiardiasisSchistosomiasisEthiopiaGiardia lambliaRural PopulationImmunoglobulin EBrazilKenyaCameroon