GiardiasisMetronidazoleGiardia lambliaAntitrichomonal AgentsAntiprotozoal AgentsTinidazoleNitroreductasesFecesHelicobacter pyloriAmoxicillinAnti-Bacterial AgentsClarithromycinCampingBismuthNitroimidazolesHelicobacter InfectionsTrichomonas vaginalisBacteria, AnaerobicHealth ResortsAnti-Infective AgentsTrichomonas VaginitisBacteroides fragilisIntestinal Diseases, ParasiticAnti-Ulcer AgentsCryptosporidiosisClindamycinBacteroides InfectionsOmeprazoleQuinacrineWater SupplyEnterocolitis, PseudomembranousVaginosis, BacterialOrnidazoleMicrobial Sensitivity TestsTrophozoitesTetracyclineClostridium difficileAntiparasitic AgentsDrug Therapy, CombinationEntamoeba histolyticaDiarrheaTritrichomonasNimorazoleProtozoan InfectionsDiapers, InfantMalabsorption SyndromesDrug Resistance, MicrobialDuodenoscopyAmebicidesNitrofuransFurazolidoneStomach DiseasesRosaceaAlbendazoleBacteroidesGardnerella vaginalisDrug Resistance, BacterialJejunumMandatory Reportingpara-AminobenzoatesParasitologySwimming PoolsRanitidine