AmoxicillinCanadaAmoxicillin-Potassium Clavulanate CombinationAnti-Bacterial AgentsPenicillinsClavulanic AcidClarithromycinClavulanic AcidsMetronidazoleMicrobial Sensitivity TestsHelicobacter pyloriDrug Therapy, CombinationHelicobacter InfectionsOmeprazole2-PyridinylmethylsulfinylbenzimidazolesAmpicillinPenicillin ResistanceOtitis MediaAnti-Ulcer AgentsDrug Resistance, BacterialStreptococcus pneumoniaeLansoprazoleFurazolidoneRabeprazolebeta-LactamsBismuthCefaclorAnti-Infective AgentsCefuroximeOntarioProton Pump Inhibitorsbeta-LactamasesAzithromycinHaemophilus influenzaePneumococcal InfectionsTetracyclineLevofloxacinAdministration, OralOtitis Media with EffusionTonsillitisPenicillin VTreatment OutcomeAza CompoundsLactamsCyclacillinCefiximeOfloxacinProbenecidDrug Resistance, Multiple, BacterialPenicillin-Binding ProteinsAlbertaCephalosporinsAcute DiseaseCefotaximeSuspensionsBacteria, AnaerobicRespiratory Tract InfectionsDuodenal UlcerPenicillin GBritish ColumbiaBacterial Infectionsbeta-Lactam ResistanceColony Count, MicrobialMoraxella (Branhamella) catarrhalisUrinary Tract InfectionsTinidazoleRanitidinePneumonia, PneumococcalDrug CombinationsPeptic UlcerAntibiotic ProphylaxisTrimethoprim-Sulfamethoxazole CombinationManitobaTachypneaDouble-Blind MethodSulbactamCephalexinDrug EruptionsHaemophilus InfectionsSinusitisDyspepsiaNova ScotiaBacteria, AerobicArctic RegionsDrug Resistance, MicrobialDrug Administration ScheduleTooth ExtractionFluoroquinolonesPenicillanic AcidEaracheCommunity-Acquired InfectionsSulfoxidesQuebecTreatment FailureNigella sativaQuinolinesBreath TestsProspective StudiesPneumonia, BacterialOrganometallic Compounds