Penicillin ResistancePenicillinsPenicillin GStreptococcus pneumoniaeAnti-Bacterial AgentsMicrobial Sensitivity TestsNasopharyngeal DiseasesDrug Resistance, BacterialPneumococcal InfectionsDrug Resistance, MicrobialPenicillin VPenicillin-Binding ProteinsMuramoylpentapeptide CarboxypeptidaseHexosyltransferasesPeptidyl TransferasesDrug Resistance, Multiple, BacterialSerotypingPenicillin G ProcainePenicillin AmidaseDrug ResistancePenicillin G BenzathineAnti-Infective AgentsNeisseria gonorrhoeaeDrug Resistance, MultiplePenicillinaseErythromycinAmpicillinBacterial Proteinsbeta-LactamasesLactamsTetracyclineDNA, BacterialEscherichia coliMacrolidesStaphylococcus aureusAntimicrobial Cationic PeptidesStreptococcal InfectionsBacteriaElectrophoresis, Gel, Pulsed-FieldStaphylococcusMutationbeta-LactamsGenes, BacterialDrug Resistance, NeoplasmR FactorsMolecular Sequence DataGram-Negative BacteriaCefotaximeStreptococcusPlasmidsCephalosporinsOxacillinBacterial InfectionsAminoacyltransferasesFluoroquinolonesBacterial Typing TechniquesPolymerase Chain ReactionAmpicillin ResistanceTetracycline ResistanceTransformation, BacterialGram-Positive BacteriaCulture MediaSequence Analysis, DNAStreptomycinCeftriaxoneDisease ResistanceNasopharynxDrug Resistance, ViralCiprofloxacinEnterobacteriaceaebeta-Lactam ResistanceSalmonellaCarrier ProteinsEscherichia coli InfectionsBacteremiaCommunity-Acquired InfectionsCarrier StateCross InfectionEnterococcusMoraxella (Branhamella) catarrhalisHaemophilus influenzaeRespiratory Tract InfectionsGonorrheaPneumococcal VaccinesPseudomonas aeruginosaVascular ResistancePneumonia, PneumococcalDNA FingerprintingMolecular EpidemiologyGentamicinsStaphylococcal InfectionsFecesAmino Acid SequenceTrimethoprim-Sulfamethoxazole CombinationChloramphenicolShigellaSalmonella InfectionsGram-Negative Bacterial InfectionsPhenotypeGram-Positive Bacterial Infections