GiardiasisGiardia lambliaMetronidazoleFecesCampingAntiprotozoal AgentsHealth ResortsCryptosporidiosisIntestinal Diseases, ParasiticAntitrichomonal AgentsQuinacrineWater SupplyMalabsorption SyndromesDiapers, InfantAntiparasitic AgentsTrophozoitesDuodenoscopyTinidazoleJejunumParasitologyMandatory Reportingpara-AminobenzoatesSwimming PoolsDiarrhea