Table 2.
Bacteria identified by VITEK 2, Phoenix, MALDI-MS and MALDI-BD regarding control strain, first identification, sample source and identification score
| Sample | First identification | Source | Phenotypic manual | VITEK 2 |
Phoenix |
MALDI-MS |
MALDI-BD |
||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Species | QI (%) | Species | QI (%) | Species | Score (%) | Species | Score | ||||
| 1 | Elizabethkingia meningoseptica | Haemoculture | E. meningoseptica | E. meningoseptica | 99 | E. meningoseptica | 99 | E. meningoseptica | 99 | E. meningoseptica | 1885 |
| 2 | Chryseobacterium indologenes | Haemoculture | C. indologenes | C. indologenes | 99 | Stenotrophomonas maltophilia | 99 | S. maltophilia | 98.5 | S. maltophilia | 2139 |
| 3 | E. meningoseptica | Haemoculture | C. indologenes | E. meningoseptica | 99 | C. indologenes | 99 | E. meningoseptica | 982 | Elizabethkingia miricola | 1994 |
| 4 | C. indologenes | Haemoculture | E. meningoseptica | C. indologenes | 96 | C. indologenes | 98 | Not identified | Chryseobacterium gleum | 2351 | |
| 5 | C. indologenes | Haemoculture | C. indologenes | C. indologenes | 99 | C. indologenes | 97 | Not identified | C. indologenes | 212 | |
| 6 | C. indologenes | Haemoculture | C. indologenes | C. indologenes | 96 | C. indologenes | 98 | Chryseobacterium sp. | 81.7 | C. gleum | 2061 |
| 7 | C. indologenes | Haemoculture | C. indologenes | C. indologenes | 50 | C. indologenes | 98 | Chryseobacterium sp. | 89.7 | C. indologenes | 2102 |
| 8 | C. indologenes | Haemoculture | C. indologenes | C. indologenes | 99 | C. indologenes | 98 | Chryseobacterium sp. | 85.9 | C. indologenes | 2325 |
| 9 | C. indologenes | Haemoculture | C. indologenes | C. indologenes | 99 | C. indologenes | 97 | Not identified | C. gleum | 1299 | |
| 10 | C. indologenes | Haemoculture | E. meningoseptica | E. meningoseptica | 93 | C. indologenes | 99 | C. indologenes | 84 | C. indologenes | 2206 |
| 11 | E. meningoseptica | Haemoculture | E. meningoseptica | E. meningoseptica | 99 | E. meningoseptica | 90 | E. meningoseptica | 75.9 | E. meningoseptica | 2201 |
| 12 | E. meningoseptica | CF | E. meningoseptica | E. meningoseptica | 99 | E. meningoseptica | 99 | E. meningoseptica | 87.6 | E. miricola | 216 |
| 13 | E. meningoseptica | CF | E. meningoseptica | E. meningoseptica | 99 | C. indologenes | 98 | E. meningoseptica | 67.9 | E. miricola | 2005 |
| 14 | E. meningoseptica | CF | E. meningoseptica | E. meningoseptica | 99 | E. meningoseptica | 99 | E. meningoseptica | 99.9 | E. meningoseptica | 1989 |
| 15 | C. indologenes | CF | Inconclusive | Acinetobacter baumannii | 91 | Burkholderia cepacia | 98 | Burkholderia vietnamiensis | 84.3 | B. vietnamiensis | 2433 |
| 16 | E. meningoseptica | CF | Inconclusive | A. baumannii | 91 | B. cepacia | 95 | E. meningoseptica | 99.9 | E. miricola | 2093 |
| 17 | C. indologenes | CF | Sphingomonas paucimobilis | S. paucimobilis | 93 | Sphingobacterium spiritivorum | 99 | Not identified | Chryseobacterium sp. | 1638 | |
| 18 | E. meningoseptica | CF | Inconclusive | E. meningoseptica | 50 | E. meningoseptica | 99 | Not identified | E. miricola | 2032 | |
| 19 | E. meningoseptica | Haemoculture | Ralstonia pickettii | C. indologenes | 95 | C. indologenes | 99 | E. meningoseptica | 98.2 | E. miricola | 1787 |
| 20 | C. indologenes | Haemoculture | Inconclusive | Brevundimonas diminnuta | 99 | S. spiritivorum | 99 | Not identified | Chryseobacterium sp. | 1729 | |
| 21 | E. meningoseptica | Haemoculture | E. meningoseptica | E. meningoseptica | 99 | E. meningoseptica | 96 | E. meningoseptica | 99.9 | E. meningoseptica | 1758 |
| 22 | E. meningoseptica | Haemoculture | E. meningoseptica | E. meningoseptica | 95 | Not identified | Pseudoxanthomonas kaohsiungensis | 41.8 | S. maltophilia | 1311 | |
| LMG8337 | C. indologenes | BCCM/LMG | C. indologenes | C. indologenes | 94 | C. indologenes | 98 | C. indologenes | 86.3 | C. indologenes | 213 |
| LMG12279 | E. meningoseptica | BCCM/LMG | E. meningoseptica | E. meningoseptica | 96 | E. meningoseptica | 99 | E. meningoseptica | 78.6 | E. meningoseptica | 198 |
BCCM/LMG, Belgian Co-ordinated Collections of Micro-organisms LMG Bacteria Collection; CF, cystic fibrosis; MALDI-BD, MALDI-TOF BioTyper (Becton Dickinson (BD), San Diego, CA, USA); MALDI-MS, MALDI-TOF VITEK MS (bioMérieux, Marcy l’Étoile, France); MALDI-TOF, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry; Phoenix (BD); QI, quality of identification; VITEK 2, VITEK 2 automated phenotypic method (bioMérieux).