Otitis MediaOtitis Media with EffusionOtitis Media, SuppurativeEar, MiddleOtitis ExternaChinchillaMiddle Ear VentilationEustachian TubeOtitisOtoscopyHaemophilus influenzaeCulture MediaMastoiditisHaemophilus InfectionsPneumococcal InfectionsAcoustic Impedance TestsAcute DiseaseTympanic MembraneTympanic Membrane PerforationMoraxellaceae InfectionsLabyrinthitisStreptococcus pneumoniaeNasopharynxCholesteatoma, Middle EarMoraxella (Branhamella) catarrhalisAmoxicillin-Potassium Clavulanate CombinationOtolaryngologyEar DiseasesTympanoplastyAmoxicillinOtoscopesMastoidAdenoidsHearing LossRespiratory Tract InfectionsSulfisoxazoleEaracheDiagnostic Techniques, OtologicalEar CanalPneumococcal VaccinesAdenoidectomyNeisseriaceae InfectionsRecurrenceVaccines, ConjugateAnti-Bacterial AgentsChild Day Care CentersMiddle Cerebral ArterySinusitisHearing TestsAzithromycinDisease Models, AnimalChronic DiseaseOtologic Surgical ProceduresCefaclorMucous MembraneEar OssiclesExudates and TransudatesAudiometryXylitolMass MediaNasopharyngeal DiseasesInfarction, Middle Cerebral ArteryBacterial InfectionsTemporal BoneStreptolysinsAntibodies, BacterialFacial ParalysisCefuroximeHaemophilus VaccinesMyringoplastyHuman bocavirusTime FactorsInfant, NewbornCerumenProspective StudiesHearing Loss, ConductiveCulture Media, Conditioned