GiardiasisGiardia lambliaMetronidazoleFecesCampingAntiprotozoal AgentsHealth ResortsIntestinal Diseases, ParasiticCryptosporidiosisAntitrichomonal AgentsQuinacrineWater SupplyDiapers, InfantMalabsorption SyndromesAntiparasitic AgentsTrophozoitesDuodenoscopyTinidazoleJejunumMandatory ReportingParasitologypara-AminobenzoatesSwimming PoolsDiarrhea