Penicillin ResistancePenicillinsPenicillin GDrug Resistance, BacterialAnti-Bacterial AgentsMicrobial Sensitivity TestsPenicillin VDrug Resistance, MicrobialStreptococcus pneumoniaeDrug Resistance, Multiple, BacterialPneumococcal InfectionsPenicillin G ProcaineDrug ResistancePenicillin-Binding ProteinsPenicillin AmidaseMuramoylpentapeptide CarboxypeptidaseDrug Resistance, MultiplePenicillin G BenzathineHexosyltransferasesPeptidyl TransferasesNeisseria gonorrhoeaeAnti-Infective AgentsPenicillinaseDrug Resistance, NeoplasmSerotypingErythromycinBacterial ProteinsAmpicillinbeta-LactamasesLactamsAntimicrobial Cationic PeptidesTetracyclineMacrolidesDisease ResistanceDNA, BacterialStreptococcal InfectionsVascular ResistanceEscherichia coliStaphylococcus aureusBacteriabeta-LactamsElectrophoresis, Gel, Pulsed-FieldDrug Resistance, ViralR FactorsStaphylococcusGram-Negative BacteriaMolecular Sequence DataMutationTetracycline ResistanceAminoacyltransferasesGenes, BacterialCefotaximeStreptococcusBacterial InfectionsPlasmidsOxacillinCephalosporinsAmpicillin Resistancebeta-Lactam ResistanceTransformation, BacterialNasopharynxCommunity-Acquired InfectionsMoraxella (Branhamella) catarrhalisGram-Positive BacteriaBacteremiaCarrier ProteinsPneumococcal VaccinesCeftriaxoneSalmonellaPolymerase Chain ReactionFluoroquinolonesRespiratory Tract InfectionsEnterobacteriaceaeGonorrheaEscherichia coli InfectionsCarrier StateCiprofloxacinIntegronsShigellaCross InfectionGram-Negative Bacterial InfectionsPneumonia, PneumococcalDrug Resistance, FungalHaemophilus influenzaeDisk Diffusion Antimicrobial TestsStreptomycinTrimethoprim-Sulfamethoxazole CombinationSalmonella InfectionsBacterial Typing TechniquesSalmonella entericaCulture MediaEnterococcusCephalosporin ResistanceMolecular EpidemiologyChloramphenicol ResistanceGentamicinsTransformation, GeneticGram-Positive Bacterial InfectionsConjugation, GeneticSpain