Streptococcus pneumoniaeStreptococcusSepsisPneumococcal InfectionsKlebsiella pneumoniaeSerotypingStreptococcus pyogenesStreptococcus mutansPneumonia, PneumococcalMycoplasma pneumoniaeStreptococcal InfectionsStreptococcus agalactiaeAnti-Bacterial AgentsBacterial ProteinsNasopharynxMicrobial Sensitivity TestsPenicillin ResistancePneumococcal VaccinesStreptolysinsMeningitis, PneumococcalBacterial CapsulesStreptococcus mitisDrug Resistance, BacterialStreptococcus suisPenicillinsStreptococcus oralisDNA, BacterialErythromycinAnti-Infective AgentsFluoroquinolonesStreptococcus PhagesAntibodies, BacterialMacrolidesDrug Resistance, MicrobialN-Acetylmuramoyl-L-alanine AmidaseOtitis MediaHaemophilus influenzaeStreptococcus bovisPolysaccharides, BacterialCarrier StateMolecular Sequence DataKlebsiella InfectionsGenes, BacterialPneumonia, MycoplasmaVaccines, ConjugateKetolidesCefotaximeTransformation, BacterialAntigens, BacterialBacteremiaStreptococcus equiMoraxella (Branhamella) catarrhalisCeftriaxonePenicillin-Binding ProteinsLevofloxacinVirulenceRespiratory Tract InfectionsDNA Topoisomerase IVStreptococcus sobrinusStreptococcal VaccinesAminoacyltransferasesBacterial Typing TechniquesMeningitis, BacterialOfloxacinNaphthyridinesGram-Positive BacteriaColony Count, MicrobialBacterial AdhesionCephalosporinsPolymerase Chain ReactionPneumonia, BacterialSequence Analysis, DNAElectrophoresis, Gel, Pulsed-FieldDrug Resistance, Multiple, BacterialGene Expression Regulation, BacterialCommunity-Acquired InfectionsStreptococcus gordoniiChlamydophila InfectionsStreptococcus thermophilusAza CompoundsDNA GyraseHexosyltransferasesCulture MediaOpsonin ProteinsNasopharyngeal DiseasesEnterococcus faecalisBase SequencePeptidyl TransferasesAdhesins, BacterialBacteriaAmino Acid SequenceHaemophilus InfectionsMuramoylpentapeptide CarboxypeptidaseBacterial VaccinesBacteriological TechniquesChild Day Care CentersPharynxCiprofloxacinMutationQuinolones