Cryptosporidium parvumCryptosporidiumCryptosporidiosisGiardiaGiardia lambliaOocystsGiardiasisCoccidiaDNA, ProtozoanFecesRNA, Ribosomal, 18SParasitologyParasite Egg CountCoccidiostatsProtozoan InfectionsRNA, ProtozoanWater SupplyProtozoan ProteinsAntibodies, ProtozoanDiarrheaParomomycinCattleSporozoitesCattle DiseasesAntigens, ProtozoanApicomplexaWaterWater PurificationAntiprotozoal AgentsGenes, ProtozoanDisinfectionPropionibacterium acnesFluorescent Antibody Technique, DirectPolymerase Chain ReactionGenome, ProtozoanAmebicidesAntiparasitic AgentsImmunomagnetic SeparationIntestinal Diseases, ParasiticWater MicrobiologyHost-Parasite InteractionsWater PollutionFresh WaterPolymorphism, Restriction Fragment LengthMolecular Sequence DataZoonosesIMP DehydrogenaseSewageFood ParasitologyEntamoebaIsosporaGenotypeFiltrationParasite LoadChlorine CompoundsSequence Analysis, DNACyclosporaAnimals, Wild