TABLE 1.
Paired isolate summary
| Isolate pair identifier | No. of yrs between collections | Aztreonam MIC (μg/ml) |
Fold increase in MIC | Aztreonam resistance stratification group | |
|---|---|---|---|---|---|
| Sensitive isolates | Resistant isolates | ||||
| P_1329 | 1.88 | 8 | 512 | 64 | No exposure |
| P_1266 | 1.07 | 8 | 128 | 16 | No exposure |
| P_1268 | 0.86 | 1 | 64 | 64 | No exposure |
| P_1273 | 1.04 | 8 | 64 | 8 | No exposure |
| P_1279 | 0.98 | 1 | 64 | 64 | No exposure |
| P_1455 | 1.92 | 1 | 64 | 64 | No exposure |
| P_1078 | 1.95 | 4 | 32 | 8 | No exposure |
| P_1468 | 0.90 | 4 | 32 | 8 | No exposure |
| P_1011 | 1.00 | 1 | 16 | 16 | No exposure |
| P_1085 | 1.15 | 1 | 16 | 16 | No exposure |
| P_1099 | 1.11 | 2 | 16 | 8 | No exposure |
| P_1274 | 1.01 | 1 | 16 | 16 | No exposure |
| P_1010 | 2.09 | 2 | 32 | 16 | Low resistance |
| P_1237 | 1.15 | 1 | 32 | 32 | Low resistance |
| P_1324 | 0.96 | 2 | 32 | 16 | Low resistance |
| P_1335 | 1.22 | 4 | 32 | 8 | Low resistance |
| P_1384 | 1.80 | 2 | 32 | 16 | Low resistance |
| P_1451 | 1.98 | 1 | 32 | 32 | Low resistance |
| P_1072 | 1.18 | 4 | 16 | 4 | Low resistance |
| P_1146 | 1.05 | 1 | 16 | 16 | Low resistance |
| P_1215 | 0.83 | 1 | 16 | 16 | Low resistance |
| P_1261 | 0.92 | 1 | 16 | 16 | Low resistance |
| P_1305 | 1.92 | 1 | 16 | 16 | Low resistance |
| P_1390 | 1.05 | 1 | 16 | 16 | Low resistance |
| P_1351 | 1.08 | 1 | 256 | 256 | Medium resistance |
| P_1429 | 1.01 | 2 | 256 | 128 | Medium resistance |
| P_1494 | 1.94 | 8 | 256 | 32 | Medium resistance |
| P_1505 | 0.75 | 1 | 256 | 256 | Medium resistance |
| P_1019 | 1.04 | 1 | 128 | 128 | Medium resistance |
| P_1022 | 1.19 | 2 | 128 | 64 | Medium resistance |
| P_1119 | 2.22 | 1 | 128 | 128 | Medium resistance |
| P_1144 | 0.99 | 1 | 128 | 128 | Medium resistance |
| P_1257 | 1.87 | 1 | 128 | 128 | Medium resistance |
| P_1259 | 1.95 | 2 | 128 | 64 | Medium resistance |
| P_1316 | 2.04 | 1 | 128 | 128 | Medium resistance |
| P_1323 | 1.00 | 8 | 128 | 16 | Medium resistance |
| P_1431 | 1.97 | 1 | 128 | 128 | Medium resistance |
| P_1432 | 0.91 | 2 | 128 | 64 | Medium resistance |
| P_1440 | 1.97 | 4 | 128 | 32 | Medium resistance |
| P_1499 | 1.07 | 4 | 128 | 32 | Medium resistance |
| P_1137 | 2.04 | 1 | 64 | 64 | Medium resistance |
| P_1197 | 1.86 | 1 | 64 | 64 | Medium resistance |
| P_1230 | 1.11 | 16 | 64 | 4 | Medium resistance |
| P_1334 | 2.03 | 8 | 64 | 8 | Medium resistance |
| P_1342 | 1.02 | 4 | 64 | 16 | Medium resistance |
| P_1397 | 1.82 | 2 | 64 | 32 | Medium resistance |
| P_1403 | 0.90 | 1 | 64 | 64 | Medium resistance |
| P_1437 | 0.99 | 8 | 64 | 8 | Medium resistance |
| P_1475 | 1.15 | 1 | 64 | 64 | Medium resistance |
| P_1018 | 1.11 | 2 | >2,048 | >1,024 | High resistance |
| P_1210 | 0.94 | 1 | >2,048 | >2,048 | High resistance |
| P_1411 | 0.80 | 1 | 2,048 | 2,048 | High resistance |
| P_1439 | 0.86 | 4 | 2,048 | 512 | High resistance |
| P_1472 | 1.78 | 1 | 2,048 | 2,048 | High resistance |
| P_1004 | 0.96 | 8 | 1,024 | 128 | High resistance |
| P_1115 | 0.86 | 1 | 1,024 | 1,024 | High resistance |
| P_1379 | 1.06 | 8 | 1,024 | 128 | High resistance |
| P_1038 | 1.04 | 16 | 512 | 32 | High resistance |
| P_1308 | 2.03 | 2 | 512 | 256 | High resistance |
| P_1407 | 0.81 | 64 | 512 | 8 | High resistance |