Otitis MediaOtitis Media with EffusionOtitis Media, SuppurativeEar, MiddleOtitis ExternaChinchillaMiddle Ear VentilationEustachian TubeOtitisOtoscopyHaemophilus influenzaeCulture MediaMastoiditisHaemophilus InfectionsAcute DiseasePneumococcal InfectionsAcoustic Impedance TestsTympanic Membrane PerforationTympanic MembraneMoraxellaceae InfectionsLabyrinthitisStreptococcus pneumoniaeNasopharynxMoraxella (Branhamella) catarrhalisAmoxicillin-Potassium Clavulanate CombinationCholesteatoma, Middle EarOtolaryngologyAmoxicillinTympanoplastyOtoscopesEar DiseasesAdenoidsMastoidRespiratory Tract InfectionsRecurrenceHearing LossSulfisoxazoleEpisode of CareEarachePneumococcal VaccinesDiagnostic Techniques, OtologicalEar CanalAnti-Bacterial AgentsAdenoidectomyVaccines, ConjugateNeisseriaceae InfectionsChild Day Care CentersChronic DiseaseSinusitisAzithromycinHearing TestsCefaclorBacterial InfectionsDisease Models, AnimalXylitolMucous MembraneAudiometryExudates and TransudatesMass MediaProspective StudiesOtologic Surgical ProceduresNasopharyngeal DiseasesTime FactorsInfant, NewbornAntibodies, BacterialCefuroximeStreptolysinsFacial ParalysisTreatment OutcomeHaemophilus VaccinesMyringoplastyHuman bocavirusCerumenPenicillin VCarrier StateSerotypingHearing Loss, ConductiveEar OssiclesCulture Media, ConditionedPenicillins