Food ParasitologyHelminthiasisHelminthiasis, AnimalHelminthsNeglected DiseasesAscaris lumbricoidesAnthelminticsTrichurisAscariasisAncylostomatoideaTrichuriasisMagicSierra LeoneSoilIntestinal Diseases, ParasiticToilet FacilitiesHookworm InfectionsStrongyloides stercoralisDuddingtoniaNecator americanusSchistosomiasisCentral Nervous System HelminthiasisAncylostomaAlbendazolePraziquantelFecesParasite Egg CountHygienePrevalenceNigeria