Table 2.
Comparison of the results of identification of blood culture isolates obtained with the automated VITEK® 2 system, conventional phenotypic methods, and genotypic methods
| Microorganism isolated (number) | Automated identification | Conventional methods | Genotypic identification |
|---|---|---|---|
| Bacillus licheniformis (N = 2) | 0 | NP | 2 |
| Corynebacterium amycolatum (N = 3) | 0 | NP | 3 |
| Enterococcus faecalis (N = 8) | 7 | 8 | 8 |
| Staphylococcus epidermidis (N = 81) | 71 | 81 | 81 |
| Staphylococcus hominis (N = 35) | 32 | 33 | 35 |
| Staphylococcus capitis (N = 18) | 17 | 18 | 18 |
| Staphylococcus haemolyticus (N = 50) | 49 | 48 | 50 |
| Staphylococcus aureus (N = 17) | 17 | 17 | 17 |
| Enterobacter cloacae (N = 13) | 13 | 13 | 13 |
| Proteus mirabilis (N = 5) | 5 | 5 | 5 |
| Escherichia coli (N = 13) | 13 | 13 | 13 |
| Serratia marcescens (N = 22) | 22 | 22 | 22 |
| Acinetobacter baumannii (N = 39) | 39 | 39 | 39 |
| Acinetobacter lwoffii (N = 3) | 3 | 3 | 3 |
| Candida albicans (N = 5) | 5 | 5 | 5 |
| Candida glabrata (N = 5) | 5 | 5 | 5 |
| Candida krusei (N = 2) | 2 | 2 | 2 |
| Candida tropicalis (N = 3) | 3 | 3 | 3 |
| Enterobacter aerogenes (N = 8) | 8 | 8 | 8 |
| Enterococcus faecium (N = 4) | 4 | 4 | 4 |
| Klebsiella pneumoniae (N = 43) | 43 | 42 | 43 |
| Morganella morganii (N = 3) | 3 | 3 | 3 |
| Pseudomonas aeruginosa (N = 15) | 15 | 15 | 15 |
| Staphylococcus cohnii (N = 1) | 1 | 1 | 1 |
| Staphylococcus warneri (N = 1) | 1 | 1 | 1 |
| Stenotrophomonas maltophilia (N = 1) | 1 | 1 | 1 |
NP identification not performed