GiardiasisGiardia lambliaParasitesAntiprotozoal AgentsFecesIntestinal Diseases, ParasiticMetronidazoleCampingHost-Parasite InteractionsHealth ResortsProtozoan ProteinsCryptosporidiosisParasite LoadPlasmodium falciparumTrophozoitesAntigens, ProtozoanAntitrichomonal AgentsQuinacrineProtozoan InfectionsWater SupplyParasitologyAntiparasitic AgentsDNA, ProtozoanDiapers, InfantMalabsorption SyndromesTinidazoleAntibodies, ProtozoanDuodenoscopyParasitic Diseases, AnimalJejunumDiarrheaMandatory ReportingMalariapara-AminobenzoatesParasite Egg CountSwimming Pools