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 CombinationOtolaryngologyCholesteatoma, Middle EarAmoxicillinEar DiseasesTympanoplastyOtoscopesAdenoidsMastoidRespiratory Tract InfectionsHearing LossEaracheSulfisoxazoleEar CanalRecurrenceDiagnostic Techniques, OtologicalPneumococcal VaccinesAnti-Bacterial AgentsAdenoidectomyVaccines, ConjugateNeisseriaceae InfectionsChronic DiseaseChild Day Care CentersAzithromycinSinusitisHearing TestsProspective StudiesCefaclorDisease Models, AnimalTreatment OutcomeMucous MembraneXylitolExudates and TransudatesAudiometryMass MediaTime FactorsOtologic Surgical ProceduresBacterial InfectionsNasopharyngeal DiseasesSeverity of Illness IndexAntibodies, BacterialInfant, NewbornFacial ParalysisStreptolysinsCefuroximeHaemophilus VaccinesHuman bocavirusFollow-Up StudiesMyringoplastyCerumenOtorhinolaryngologic DiseasesHearing Loss, ConductivePenicillin VQuestionnairesCulture Media, ConditionedEar OssiclesCarrier StateSymptom Assessment