TABLE 3.
Correlation between FQ and β-lactam susceptibilities using electronic (TSN) surveillance data
| Organism | β-Lactam susceptibilitya | Levofloxacin
|
Ciprofloxacin
|
||
|---|---|---|---|---|---|
| n | No. (%) susceptible | n | No. (%) susceptible | ||
| E. coli | CAZ-S | 24,827 | 24,125 (97.2) | 79,089 | 76,959 (97.3) |
| CAZ-NS | 301 | 120 (39.9) | 908 | 356 (39.2) | |
| K. pneumoniae | CAZ-S | 6,735 | 6,518 (96.8) | 22,213 | 21,371 (96.2) |
| CAZ-NS | 670 | 311 (46.4) | 1,664 | 659 (39.6) | |
| P. mirabilis | CAZ-S | 3,855 | 3,661 (95.0) | 11,080 | 10,402 (93.9) |
| CAZ-NS | 18 | 13 (72.2) | 53 | 38 (71.7) | |
| E. cloacae | CAZ-S | 2,328 | 2,276 (97.8) | 7,529 | 7,322 (97.3) |
| CAZ-NS | 335 | 280 (83.6) | 3,237 | 2,373 (73.3) | |
| Citrobacter spp. | CAZ-S | 1,782 | 1,700 (95.4) | 5,696 | 5,346 (93.9) |
| CAZ-NS | 400 | 276 (69.0) | 1,303 | 919 (70.5) | |
| S. marcescens | CAZ-S | 1,866 | 1,781 (95.4) | 5,742 | 5,364 (93.4) |
| CAZ-NS | 167 | 157 (94.0) | 454 | 316 (69.6) | |
| E. aerogenes | CAZ-S | 1,196 | 1,166 (97.5) | 3,708 | 3,612 (97.4) |
| CAZ-NS | 335 | 280 (83.6) | 1,364 | 1,042 (76.4) | |
| Providencia spp. | CAZ-S | 418 | 228 (54.6) | 1,299 | 678 (52.2) |
| CAZ-NS | 37 | 18 (48.7) | 80 | 37 (46.3) | |
| P. aeruginosa | CAZ-S | 15,300 | 11,347 (74.2) | 52,369 | 40,246 (76.9) |
| CAZ-NS | 1,608 | 607 (37.8) | 4,960 | 1,861 (37.5) | |
| IPM-S | 13,655 | 10,229 (74.9) | 43,651 | 33,997 (77.9) | |
| IPM-NS | 2,457 | 863 (35.1) | 8,571 | 3,331 (38.9) | |
a
β-Lactam susceptibility (S) based on ceftazidime (CAZ) for Enterobacteriaceae and CAZ and imipenem (IPM) for P. aeruginosa. NS, nonsusceptible (includes intermediate and resistant strains [16]).