GiardiasisGiardia lambliaGiardiaFecesTrophozoitesCryptosporidiosisMetronidazoleAntiprotozoal AgentsCryptosporidiumCampingWater SupplyHealth ResortsAntitrichomonal AgentsProtozoan InfectionsQuinacrineIntestinal Diseases, ParasiticParasitologyAntiparasitic AgentsAntigens, ProtozoanDiarrheaDNA, ProtozoanDiapers, InfantMalabsorption SyndromesDuodenoscopyTinidazoleWater MicrobiologyProtozoan ProteinsSwimming PoolsZoonosesJejunumGerbillinaeEntamoeba histolytica