Protozoan InfectionsIntestinal Diseases, ParasiticHelminthsHelminthiasisGiardia lambliaYemenAmoebozoaEntamoeba histolyticaEntamoebiasisGiardiasisEukaryotaFecesCryptosporidiosisProtozoan Infections, AnimalPrevalenceProtozoan ProteinsDNA, ProtozoanCiliophoraBacteriaGenes, ProtozoanRNA, ProtozoanGenome, ProtozoanFungi