TABLE 3.
Performance of automated biochemical testing for identification of S. delphinia
| Isolate identifier | Group | MicroScan WalkAway | BD Phoenix | Vitek 2 |
|---|---|---|---|---|
| DSM 20771T | A | Low discriminationb | S. saprophyticus | S. pseudintermedius |
| MI 09-2894 | A | Low discriminationc | S. aureus | S. pseudintermedius |
| MI 09-8445 | A | S. aureus | S. intermedius | S. pseudintermedius |
| MI 16-1129 | A | S. intermedius | S. intermedius | S. pseudintermedius |
| VPP 12 D | A | S. intermedius | S. intermedius | S. pseudintermedius |
| 19-039 | A | S. haemolyticus | S. intermedius | S. pseudintermedius |
| 52-006 | A | S. intermedius | S. intermedius | S. pseudintermedius |
| 56-021 | A | S. haemolyticus | S. intermedius | S. pseudintermedius |
| 62-031 | A | S. intermedius | S. intermedius | S. aureus |
| 8086 | B | S. intermedius | S. intermedius | S. pseudintermedius |
| AV8047 | B | Low discriminationd | S. intermedius | S. aureus |
| H4A | B | S. intermedius | S. intermedius | S. aureus |
| HT2003-0674 | B | Low discriminatione | S. intermedius | S. aureus |
| P27B | B | S. intermedius | S. schleiferi | Unidentified organism |
| P50 | B | S. intermedius | S. intermedius | S. pseudintermedius |
| 26-037 | B | S. intermedius | S. intermedius | Low discriminationi |
| 33-090 | B | Low discriminationf | S. aureus | S. pseudintermedius |
| 35-016 | B | Low discriminationg | S. intermedius | S. aureus |
| 49-046 | B | Low discriminationh | S. intermedius | S. aureus |
| 53-033 | B | S. intermedius | S. intermedius | S. pseudintermedius |
| 56-039 | B | S. intermedius | S. intermedius | Low discriminationj |
For each automated biochemical system, only isolates with high confidence/probability scores (≥90%) were accepted as identified to the species level, while those with low confidence/probability scores (<90%) were designated low discrimination.
Low-discrimination identification results: S. aureus (84.52%), S. schleiferi subspecies coagulans (10.61%) and Staphylococcus epidermidis (4.87%).
Low-discrimination identification results: Staphylococcus simulans (51.60%), Staphylococcus haemolyticus (28.19%), S. intermedius (17.02%) and Staphylococcus hyicus (3.19%).
Low-discrimination identification results: S. aureus (79.82%) and S. haemolyticus (20.18%).
Low-discrimination identification results: S. haemolyticus (83.79%), S. hyicus (12.37%), Staphylococcus lugdunensis (2.24%), and Staphylococcus xylosus (1.60%).
Low-discrimination identification results: S. intermedius (43.83%), S. aureus (35.28%), S. simulans (9.44%), Staphylococcus auricularis (7.02%), and S. schleiferi subspecies coagulans (4.43%).
Low-discrimination identification results: S. simulans (76.81%), S. haemolyticus (12.50%), S. auricularis (5.83%), and Staphylococcus warneri (4.86%).
Low-discrimination identification results: S. schleiferi subspecies coagulans (38.63%), S. aureus (30.50%), S. intermedius (20.75%), and S. simulans (10.12%).
Low-discrimination identification results: S. aureus (∼33%), S. hyicus (∼33%), and S. schleiferi (∼33%).
Low-discrimination identification results: S. aureus (∼50%) and S. pseudintermedius (∼50%).