Table 1.
Performance of Carba 5 assay using isolates from the retrospective analysis
| Target carbapenemase | Organism group | No. of positive tests / total no. of isolates | Sensitivity (95% CI) |
Specificity (95% CI) |
|
|---|---|---|---|---|---|
| Enterobacteriaceae |
Pseudomonas species |
||||
| KPC | 30/30 | 100 (88.43–100) | 100 (94.94–100) | ||
| KPC-2 | 30 | ||||
| NDM | 26/26 | 100 (86.77–100) | 100 (95.20–100) | ||
| NDM-1 | 24 | ||||
| NDM-5 | 1 | ||||
| NDM-7 | 1 | ||||
| VIM | 12/13 | 92.31 (63.97–99.81) | 100 (95.89–100) | ||
| VIM-1 | 11 | ||||
| VIM-2 | 1 | 1 | |||
| OXA-48-like | 5/5 | 100 (47.82–100) | 100 (96.23–100) | ||
| OXA-48 | 4 | ||||
| OXA-181 | 1 | ||||
| IMP | 3/3 | 100 (29.24–100) | 100 (96.31–100) | ||
| IMP-1 | 1 | ||||
| IMP-6 | 2 | ||||
| NDM + OXA-48-like | 1/1 | 100 (2.50–100) | 100 (96.38–100) | ||
| NDM-5 + OXA-181 | 1 | ||||
| Overall | 76 | 2 | 77/78 | 98.72 (93.06–99.97) | 100 (85.18–100) |
| Non-carbapenemase producers | 21 | 2 | 23 | ||