Antiparasitic AgentsThiazolesAnticestodal AgentsAntiprotozoal AgentsAmebicidesGiardia lambliaMetronidazoleAlbendazoleNitroreductasesCryptosporidium parvumCryptosporidiosisTaenia saginataBone Diseases, InfectiousAnthelminticsPyruvate SynthaseEchinococcus granulosusEchinococcosisParasitic Sensitivity TestsGiardiasisEnterocolitis, PseudomembranousClostridium difficileParomomycinTaeniaPyruvate OxidaseBacteria, AerobicDiarrheaFascioliasisTaeniasisCysticercosisEchinococcusBoliviaProtozoan InfectionsIntestinal Diseases, ParasiticBacteria, AnaerobicTrichurisEntamoeba histolyticaFecesAnti-Bacterial AgentsAnti-Infective AgentsParasite Egg CountGerbillinaePlacebosVancomycinDouble-Blind MethodDrug ResistanceProtein Disulfide-IsomerasesTreatment OutcomeDrug Therapy, CombinationMicroscopy, Electron, TransmissionAntiviral AgentsMicrobial Sensitivity TestsHelicobacter pyloriDrug Resistance, MicrobialReverse Transcriptase Polymerase Chain Reaction