Figure 2

Prevalence of resistance to 1, 2, 3, 4, 5, or 6 antibacterial agents^a among Streptococcus pneumoniae isolates collected during the PROTEKT US study Years 1–4 (2000–2004). ^aPenicillin (MIC ≥ 2 μg/mL), erythromycin (MIC ≥ 1 μg/mL), cefuroxime (MIC ≥ 4 μg/mL), tetracycline (MIC ≥ 8 μg/mL), trimethoprim-sulfamethoxazole; MIC ≥ 4 μg/mL), and levofloxacin (MIC ≥ 8 μg/mL).