TABLE 1.
Identification of 261 clinical anaerobic isolates with the Vitek 2 ANC card
| Organisms | No. (%) of strains that were:
|
|||||
|---|---|---|---|---|---|---|
| Tested | Correctly identified | Identified with low discrimination | Misidentified | Correctly identified after additional tests | Not identified | |
| Bacteroides spp. | 61 | 60 (98.4) | 0 (0.0) | 1 (1.6) | 0 (0.0) | 0 (0.0) |
| Bacteroides fragilis group | 55 | 54 | 0 | 1 | 0 | 0 |
| Bacteroides caccae | 3 | 3 | 0 | 0 | 0 | 0 |
| Parabacteroides distasonis | 5 | 5 | 0 | 0 | 0 | 0 |
| Bacteroides fragilis | 20 | 20 | 0 | 0 | 0 | 0 |
| Bacteroides ovatus | 5 | 5 | 0 | 0 | 0 | 0 |
| Bacteroides thetaiotaomicron | 14 | 13 | 0 | 1 | 0 | 0 |
| Bacteroides uniformis | 3 | 3 | 0 | 0 | 0 | 0 |
| Bacteroides vulgatus | 5 | 5 | 0 | 0 | 0 | 0 |
| Bacteroides ureolyticus | 6 | 6 | 0 | 0 | 0 | 0 |
| Prevotella spp. | 36 | 31 (86.1) | 2 (5.6) | 3 (8.3) | 2 (5.6) | 0 (0.0) |
| Prevotella bivia | 10 | 7 | 2 | 1 | 2 | 0 |
| Prevotella buccae | 5 | 5 | 0 | 0 | 0 | 0 |
| Prevotella disiens | 4 | 4 | 0 | 0 | 0 | 0 |
| Prevotella intermedia | 5 | 4 | 0 | 1 | 0 | 0 |
| Prevotella melaninogenica | 6 | 5 | 0 | 1 | 0 | 0 |
| Prevotella oralis | 6 | 6 | 0 | 0 | 0 | 0 |
| Fusobacterium spp. | 19 | 18 (94.7) | 1 (5.3) | 0 (0.0) | 1 (5.3) | 0 (0.0) |
| Fusobacterium mortiferum | 2 | 2 | 0 | 0 | 0 | 0 |
| Fusobacterium necrophorum | 3 | 3 | 0 | 0 | 0 | 0 |
| Fusobacterium nucleatum | 12 | 11 | 1 | 0 | 1 | 0 |
| Fusobacterium varium | 2 | 2 | 0 | 0 | 0 | 0 |
| Veillonella spp. | 5 | 5 (100) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Gram-positive cocci | 24 | 24 (100) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Finegoldia magna | 5 | 5 | 0 | 0 | 0 | 0 |
| Parvimonas micra | 10 | 10 | 0 | 0 | 0 | 0 |
| Peptinophilus asaccharolyticus | 4 | 4 | 0 | 0 | 0 | 0 |
| Peptostreptococcus anaerobius | 5 | 5 | 0 | 0 | 0 | 0 |
| Nonsporeforming gram-positive bacilli | 46 | 44 (95.7) | 0 (0.0) | 2 (4.3) | 0 (0.0) | 0 (0.0) |
| Actinomyces israelii/gerencseriae | 4 | 4 | 0 | 0 | 0 | 0 |
| Actinomyces meyeri | 1 | 1 | 0 | 0 | 0 | 0 |
| Actinomyces naeslundii | 1 | 1 | 0 | 0 | 0 | 0 |
| Bifidobacterium spp. | 5 | 5 | 0 | 0 | 0 | 0 |
| Eggerthella lenta | 11 | 11 | 0 | 0 | 0 | 0 |
| Eubacterium limosum | 1 | 1 | 0 | 0 | 0 | 0 |
| Propionibacterium acnes | 20 | 20 | 0 | 0 | 0 | 0 |
| Propionibacterium granulosum | 3 | 1 | 0 | 2 | 0 | 0 |
| Sporeforming gram-positive bacilli | 70 | 45 (64.3) | 21 (30) | 2 (2.9) | 14 (20) | 2 (2.9) |
| Clostridium bifermentans | 2 | 0 | 0 | 0 | 0 | 2 |
| Clostridium butyricum | 5 | 0 | 5 | 0 | 0 | 0 |
| Clostridium cadaveris | 6 | 6 | 0 | 0 | 0 | 0 |
| Clostridium clostridioforme | 6 | 6 | 0 | 0 | 0 | 0 |
| Clostridium difficile | 20 | 7 | 12 | 1 | 10 | 0 |
| Clostridium paraputrificum | 3 | 3 | 0 | 0 | 0 | 0 |
| Clostridium perfringens | 10 | 10 | 0 | 0 | 0 | 0 |
| Clostridium ramosum | 5 | 4 | 1 | 0 | 1 | 0 |
| Clostridium septicum | 1 | 1 | 0 | 0 | 0 | 0 |
| Clostridium sordellii | 2 | 2 | 0 | 0 | 0 | 0 |
| Clostridium sporogenes | 4 | 1 | 3 | 0 | 3 | 0 |
| Clostridium tertium | 6 | 5 | 0 | 1 | 0 | 0 |
| Total | 261 | 227 (87) | 24 (9.2) | 8 (3.1) | 17 (6.6) | 2 (0.8) |