Protozoan InfectionsIntestinal Diseases, ParasiticHelminthsAmoebozoaHelminthiasisYemenGiardia lambliaFecesEntamoeba histolyticaGiardiasisBlastocystis hominisEntamoebiasisEukaryotaTajikistanCryptosporidiosisPolyvinyl AlcoholCote d'IvoireIndian Ocean IslandsEntamoebaParasitic DiseasesZinc SulfateBlastocystis InfectionsPrevalenceParasitologyAntiparasitic AgentsProtozoan Infections, AnimalCryptosporidiumProtozoan Proteins