Protozoan InfectionsIntestinal Diseases, ParasiticHelminthsHelminthiasisGiardia lambliaAmoebozoaEntamoeba histolyticaYemenGiardiasisBlastocystis hominisEukaryotaEntamoebiasisFecesCryptosporidiosisTajikistanPolyvinyl AlcoholEntamoebaCote d'IvoireIndian Ocean IslandsParasitic DiseasesZinc SulfateBlastocystis InfectionsProtozoan Infections, AnimalParasitologyPrevalenceAntiparasitic AgentsProtozoan ProteinsCryptosporidiumDNA, ProtozoanCiliophoraGenes, ProtozoanRNA, ProtozoanGenome, ProtozoanStaining and LabelingTrypanosoma cruziLeishmaniaToxoplasma