LevofloxacinOfloxacinInfusions, IntravenousAnti-Infective AgentsInfusions, ParenteralAza CompoundsFluoroquinolonesAnti-Bacterial AgentsMicrobial Sensitivity TestsCiprofloxacinQuinolinesInfusion PumpsQuinolonesNaphthyridinesArea Under CurveStreptococcus pneumoniaeDrug Resistance, BacterialInjections, IntravenousDNA GyraseInfusions, Intra-ArterialDNA Topoisomerase IVHalf-LifeDose-Response Relationship, Drug