Table 3 Discrepancies and error in the conventional identification method (Vitek 2) and MALDI-TOF for the identification of 16 Gram-negative cocci
Final identification (no of isolates) | Number of isolates | ||||||
|---|---|---|---|---|---|---|---|
Conventional identification method (Vitek 2) | VITEK MS identification | Bruker MS identification | 16S rRNA sequence results (number of discrepant organisms sequenced) | ||||
No ID | Mis - ID | No ID | Mis - ID | No ID | Mis - ID | Â | |
Haemophilus influenzae (8) | 0 | 0 | 0 | 0 | 0 | 2 (score <1.7) | H. influenzae (2) |
Neisseria cinerea (1) | 0 | 0 | 0 | 1 (Neisseria subflava) | 0 | 1 (Neisseria sicca) | N. cinerea (1) |
Neisseria subflava (5) | NA | NA | 0 | 0 | 0 | Neisseria flava (5) | N. subflava (5) |
Neisseria meningitidis (1) | 0 | 0 | 0 | 0 | 0 | 0 | Â |
Moraxella catarrhalis (1) | 0 | 0 | 0 | 0 | 0 | 0 | Â |