HelminthsHelminthiasisHelminthiasis, AnimalEndemic DiseasesTherapy with HelminthsIntestinal Diseases, ParasiticAntibodies, HelminthAntigens, HelminthTrichurisAnthelminticsAncylostomatoideaHelminth ProteinsParasite Egg CountNematospiroides dubiusStrongylida InfectionsAlbendazoleNematode InfectionsSchistosoma mansoniSchistosomiasis mansoniCestodaSchistosomiasisFilariasisImmune SystemSchistosomaFecesFilarioideaTrematode InfectionsTrematodaProtozoan InfectionsDNA, HelminthHost-Parasite InteractionsCestode InfectionsBrazilParasitologyFasciola hepaticaNippostrongylusPrevalenceNecator americanusStrongyloides stercoralisMalariaSchistosoma haematobiumPraziquantelTh2 CellsStrongyloidiasisSchistosomiasis haematobiaWuchereria bancroftiElephantiasis, FilarialSoilParasitic DiseasesFascioliasisAntiparasitic AgentsNematodaAscarisTrichinella spiralisImmunoglobulin GMalaria, FalciparumLeishmaniasis, VisceralMice, Inbred BALB CNecatoriasisImmune ToleranceHymenolepiasisImmunity, InnateTaeniaMalaria, VivaxTaeniasisCytokinesInsect VectorsEnzyme-Linked Immunosorbent AssayGoiter, EndemicAncylostomaCoinfectionIvermectinPlasmodium falciparumMebendazoleTravelOnchocerciasisVenezuelaStrongyloideaGenome, HelminthImmunoglobulin ETanzaniaParasitesTrichinellosisEchinococcosisHymenolepis nanaMice, Inbred C57BLSchistosoma japonicumAntibodies, ProtozoanPlasmodium vivaxParasitemiaRural PopulationBrugia malayiAntigens, ProtozoanAntinematodal AgentsAscaris suumMansonelliasisPregnancy Complications, ParasiticLeishmaniasis, CutaneousHymenolepisEcuador