Otitis MediaOtitis Media with EffusionOtitis Media, SuppurativeOtitis ExternaEar, MiddleOtitisChinchillaMiddle Ear VentilationEustachian TubeOtoscopyHaemophilus influenzaeMastoiditisHaemophilus InfectionsCulture MediaPneumococcal InfectionsAcute DiseaseAcoustic Impedance TestsTympanic Membrane PerforationTympanic MembraneLabyrinthitisMoraxellaceae InfectionsAmoxicillin-Potassium Clavulanate CombinationCholesteatoma, Middle EarOtolaryngologyStreptococcus pneumoniaeNasopharynxEar DiseasesMoraxella (Branhamella) catarrhalisTympanoplastyAmoxicillinOtoscopesAdenoidsMastoidEar CanalRespiratory Tract InfectionsHearing LossSulfisoxazoleEaracheDiagnostic Techniques, OtologicalRecurrenceAdenoidectomyVaccines, ConjugateNeisseriaceae InfectionsHearing Loss, ConductiveChild Day Care CentersSinusitisPneumococcal VaccinesAzithromycinHearing TestsChronic DiseaseCefaclorDisease Models, AnimalXylitolAnti-Bacterial AgentsMucous MembraneExudates and TransudatesOtologic Surgical ProceduresNasopharyngeal DiseasesAudiometryBacterial InfectionsMyringoplastyCerumenAntibodies, BacterialStreptolysinsCefuroximeHaemophilus VaccinesFacial ParalysisHuman bocavirusOtorhinolaryngologic DiseasesEar Ossicles