Table 1.
Characteristics of ICU and non-ICU P. aeruginosa isolatesa
| Characteristic | No. (%) of isolates with each characteristic |
P value | |
|---|---|---|---|
| ICU isolates (n = 92) | Non-ICU isolates (n = 148) | ||
| MDRPA | 84 (91.3) | 68 (46.0) | <0.001 |
| MBL positive | 16 (17.4) | 33 (22.3) | 0.359 |
| Serotype O11 | 68 (73.9) | 50 (33.8) | <0.001 |
| blaVIM | 16 (17.4) | 33 (22.3) | 0.359 |
| exoS | 25 (27.2) | 86 (58.1) | <0.001 |
| exoT | 76 (82.6) | 116 (78.4) | 0.427 |
| exoU | 83 (90.2) | 118 (79.7) | 0.032 |
| exoY | 81 (88.0) | 125 (84.5) | 0.438 |
| Clone a (ST235) | 59 (64.1) | 22 (14.9) | <0.001 |
| Clone d (ST235) | 15 (16.3) | 18 (12.2) | 0.365 |
| Clone b (ST111 or ST235) | 3 (3.3) | 7 (4.3) | 0.745 |
| Clone c (ST253) | 1 (1.0) | 5 (3.4) | 0.410 |
| Clone s (ST309 or ST639) | 0 (0.0) | 6 (4.0) | 0.084 |
| All other clones | 14 (15.2) | 90 (60.8) | <0.001 |
a
ICU, intensive care unit; MDRPA, multidrug-resistant P. aeruginosa; MBL, metallo-β-lactamase.