Otitis MediaStreptococcus pneumoniaeOtitis Media with EffusionStreptococcusPneumococcal InfectionsOtitis Media, SuppurativeEar, MiddleOtitis ExternaKlebsiella pneumoniaeStreptococcus pyogenesStreptococcus mutansPneumonia, PneumococcalMycoplasma pneumoniaeNasopharynxChinchillaAnti-Bacterial AgentsStreptococcal InfectionsHaemophilus influenzaeMiddle Ear VentilationBacterial ProteinsStreptococcus agalactiaeMicrobial Sensitivity TestsPenicillin ResistanceStreptolysinsEustachian TubeSerotypingOtitisPneumococcal VaccinesMeningitis, PneumococcalCulture MediaBacterial CapsulesStreptococcus mitisMoraxella (Branhamella) catarrhalisHaemophilus InfectionsPenicillinsDrug Resistance, BacterialErythromycinAnti-Infective AgentsStreptococcus oralisDNA, BacterialOtoscopyFluoroquinolonesStreptococcus suisRespiratory Tract InfectionsAntibodies, BacterialMacrolidesStreptococcus PhagesAcute DiseaseDrug Resistance, MicrobialCarrier StateN-Acetylmuramoyl-L-alanine AmidaseMoraxellaceae InfectionsMastoiditisStreptococcus bovisVaccines, ConjugateAmoxicillin-Potassium Clavulanate CombinationAmoxicillinMolecular Sequence DataGenes, BacterialPolysaccharides, BacterialKlebsiella InfectionsPneumonia, MycoplasmaCeftriaxoneKetolidesTransformation, BacterialStreptococcus equiCefotaximeAcoustic Impedance TestsCephalosporinsTympanic MembraneMeningitis, BacterialTympanic Membrane PerforationVirulenceAntigens, BacterialLevofloxacinChild Day Care CentersPenicillin-Binding ProteinsAzithromycinNasopharyngeal DiseasesLabyrinthitisColony Count, MicrobialDNA Topoisomerase IVStreptococcus sobrinusBacteremiaGram-Positive BacteriaAminoacyltransferasesOfloxacinNaphthyridinesBacterial AdhesionGene Expression Regulation, BacterialBacterial Typing TechniquesBacterial InfectionsPolymerase Chain ReactionBacteriaSequence Analysis, DNACefuroximePneumonia, BacterialStreptococcal VaccinesStreptococcus gordoniiPharynx