TABLE 4.
Comparison of proportion of qacA-positive, qacB-positive, qacA/B273-positive, and qacA/B-negative isolates resistant to commonly prescribed antimicrobials
| Antimicrobiala | % of isolates: |
|||
|---|---|---|---|---|
| qacA positive | qacB positive | qacA/B273 positive | qacA/B negative | |
| FOXb | 61.7 | 52.9 | 96.4 | 22.7 |
| ERYb | 76.0 | 88.2 | 92.9 | 30.1 |
| CIPb | 25.0 | 5.9 | 96.4 | 8.4 |
| GENb | 15.0 | 0 | 89.3 | 2.6 |
| SXTb | 60.1 | 35.3 | 98.2 | 22.7 |
| LZD | 0 | 0 | 0 | 0 |
| RIF | 0.9 | 0 | 0 | 0 |
| VAN | 0 | 0 | 0 | 0 |
a
CIP, ciprofloxacin; SXT, sulfamethoxazole-trimethoprim; FOX, cefoxitin; ERY, erythromycin; GEN, gentamicin; LZD, linezolid; RIF, rifampin;VAN, vancomycin.
b
P < 0.001 for all comparisons. Results were generated using all isolates; the results did not change when restricting the analyses to one randomly chosen isolate per patient per qacA/B group.