PiperacillinPenicillin ResistancePenicillinsAnti-Bacterial AgentsMicrobial Sensitivity TestsDrug Resistance, BacterialPenicillin GDrug Resistance, MicrobialStreptococcus pneumoniaePenicillanic AcidDrug Resistance, Multiple, BacterialPneumococcal InfectionsPenicillin VPenicillin-Binding ProteinsMuramoylpentapeptide CarboxypeptidasePeptidyl TransferasesHexosyltransferasesAnti-Infective AgentsDrug ResistanceDrug Resistance, Multiplebeta-LactamasesLactamsPenicillin G ProcaineNeisseria gonorrhoeaeAmpicillinbeta-LactamsSerotypingPenicillinaseAntimicrobial Cationic PeptidesBacterial ProteinsBacteriaGram-Negative BacteriaErythromycinPenicillin AmidaseBacterial InfectionsMacrolidesTicarcillinDrug Resistance, NeoplasmDNA, BacterialEscherichia coliTetracyclineStaphylococcus aureusPenicillin G BenzathineElectrophoresis, Gel, Pulsed-FieldCefotaximeEnterobacteriaceaeCarbenicillinPseudomonas aeruginosaCephalosporinsStreptococcal InfectionsAminoacyltransferasesR FactorsStaphylococcusCiprofloxacinGram-Negative Bacterial Infectionsbeta-Lactam ResistanceDisease ResistanceGram-Positive BacteriaStreptococcusPlasmidsBacteremiaGenes, BacterialCross InfectionGentamicinsMolecular Sequence DataVascular ResistanceEscherichia coli InfectionsMutationFluoroquinolonesOxacillinMoraxella (Branhamella) catarrhalisSalmonellaTransformation, BacterialNasopharynxCommunity-Acquired InfectionsImipenemPneumococcal VaccinesRespiratory Tract InfectionsTetracycline ResistanceDrug Resistance, ViralShigellaAmpicillin ResistanceCarrier ProteinsCeftriaxoneIntegronsCarrier StatePolymerase Chain ReactionPneumonia, PneumococcalSalmonella InfectionsHaemophilus influenzaeKlebsiella pneumoniaeCeftazidimeSalmonella entericaEnterococcusDisk Diffusion Antimicrobial TestsBacterial Typing TechniquesTobramycinGram-Positive Bacterial InfectionsMolecular EpidemiologyTrimethoprim-Sulfamethoxazole Combination