Respiratory Tract InfectionsUrinary Tract InfectionsRespiratory Syncytial Virus InfectionsRespiratory Syncytial VirusesAnti-Bacterial AgentsParamyxoviridae InfectionsMetapneumovirusPneumonia, ViralRespiratory SystemBronchiolitisBronchitisNasopharynxPneumoniaMoraxella (Branhamella) catarrhalisCommunity-Acquired InfectionsRespiratory Syncytial Virus, HumanVirus DiseasesAcute DiseasePneumonia, BacterialBocavirusHuman bocavirusRespiratory SoundsBronchiolitis, ViralParvovirinaeBacterial InfectionsHaemophilus influenzaeRespiratory Tract DiseasesPicornaviridae InfectionsStreptococcus pneumoniaeInfant, NewbornCoughHospitalizationVirusesProspective StudiesAmoxicillin-Potassium Clavulanate CombinationParvoviridae InfectionsRhinovirusCroupBronchopneumoniaSeasonsLungHaemophilus InfectionsNeisseriaceae InfectionsDrug UtilizationSputumParainfluenza Virus 2, HumanParainfluenza Virus 3, HumanMycoplasma pneumoniaeCommon ColdCalcitoninPneumonia, PneumococcalPhysician's Practice PatternsRespirovirus InfectionsPneumococcal InfectionsMoraxellaceae InfectionsAnti-Infective AgentsClavulanic AcidsTracheitisBronchoalveolar Lavage FluidAzithromycinRoxithromycinPoint-of-Care SystemsMacrolidesPneumonia, MycoplasmaTachypneaNunavutMicrobial Sensitivity TestsNetherlandsAmoxicillinChlamydophila pneumoniaeOtitis MediaImmunocompromised HostFamily PracticeCross InfectionRespiratory RateTracheobronchomegalyRisk FactorsBronchiectasisFluoroquinolonesCoronavirus InfectionsBodily SecretionsDrug Resistance, MicrobialAsthmaCohort StudiesIncidenceSigmodontinaePharyngitisParainfluenza Virus 1, HumanAntibodies, BacterialTonsillitisInfluenza, HumanLung DiseasesRetrospective StudiesNasal MucosaSeverity of Illness IndexTreatment OutcomeDrug Resistance, BacterialOfloxacinReproductive Tract InfectionsTrachea