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