FascioliasisFasciola hepaticaFasciolaPrevalenceAnthelminticsAntibodies, HelminthAntigens, HelminthLymnaeaBenzimidazolesDisease VectorsBoliviaEgyptSnailsSkin Diseases, ParasiticParasite Egg CountCathepsin LEmetineEndemic DiseasesPeruBithionolVenezuelaNeglected DiseasesParasitologyParagonimusParagonimiasisIraqEnzyme-Linked Immunosorbent AssayFecesSerologic Tests