Penicillin ResistancePenicillinsPenicillin GStreptococcus pneumoniaeAnti-Bacterial AgentsMicrobial Sensitivity TestsNasopharyngeal DiseasesPneumococcal InfectionsDrug Resistance, BacterialPenicillin VPenicillin-Binding ProteinsDrug Resistance, MicrobialMuramoylpentapeptide CarboxypeptidaseHexosyltransferasesPeptidyl TransferasesDrug Resistance, Multiple, BacterialPenicillin G ProcaineSerotypingPenicillin AmidasePenicillin G BenzathineDrug ResistanceNeisseria gonorrhoeaeDrug Resistance, MultiplePenicillinaseAnti-Infective AgentsErythromycinAmpicillinBacterial Proteinsbeta-LactamasesLactamsAntimicrobial Cationic PeptidesMacrolidesTetracyclineStreptococcal InfectionsDrug Resistance, NeoplasmDNA, BacterialBacteriaStaphylococcus aureusEscherichia coliElectrophoresis, Gel, Pulsed-Fieldbeta-LactamsStaphylococcusGram-Negative BacteriaAminoacyltransferasesCefotaximeStreptococcusR FactorsBacterial InfectionsCephalosporinsOxacillinMolecular Sequence DataDisease ResistanceMutationGenes, BacterialPlasmidsNasopharynxTransformation, BacterialTetracycline ResistanceAmpicillin ResistanceMoraxella (Branhamella) catarrhalisCommunity-Acquired InfectionsPneumococcal VaccinesGram-Positive BacteriaBacteremiaCeftriaxoneVascular ResistanceCarrier ProteinsSalmonellabeta-Lactam ResistanceDrug Resistance, ViralRespiratory Tract InfectionsFluoroquinolonesCarrier StateGonorrheaEnterobacteriaceaePolymerase Chain ReactionEscherichia coli InfectionsPneumonia, PneumococcalEnterococcusCross InfectionCiprofloxacinShigellaGram-Negative Bacterial InfectionsHaemophilus influenzaeDisk Diffusion Antimicrobial TestsIntegronsTrimethoprim-Sulfamethoxazole CombinationBacterial Typing TechniquesSalmonella InfectionsCulture MediaMolecular EpidemiologySalmonella entericaSpainGentamicinsGram-Positive Bacterial InfectionsStreptomycinTransformation, GeneticFecesStaphylococcal InfectionsDNA Fingerprinting