Protozoan InfectionsIntestinal Diseases, ParasiticHelminthsHelminthiasisGiardia lambliaYemenAmoebozoaEntamoeba histolyticaEntamoebiasisGiardiasisFecesEukaryotaCryptosporidiosisProtozoan Infections, AnimalPrevalenceProtozoan ProteinsImmune SystemDNA, ProtozoanCiliophoraGenes, ProtozoanRNA, ProtozoanGenome, Protozoan