TABLE 1.
Performance of the Vitek GNI card in the identification of Yersinia spp.
| Yersinia spp. | No. of isolates | % Of isolates correctly identified
|
% Of isolates identified with additional tests | Time to identification (h [mean ± SD])
|
||
|---|---|---|---|---|---|---|
| Genus level | Species level | Without additional tests | With additional tests | |||
| All species | 212 | 90 | 10.7 ± 2.8 | |||
| In Vitek database | ||||||
| All | 162 | 96 | 57 | 32 | 9.7 ± 2.7 | 32.4 ± 24.4 |
| Y. enterocolitica | 98 | 98 | 45 | 35 | 10.5 ± 1.9 | 46.5 ± 19.9 |
| Y. pseudotuberculosis | 22 | 100 | 96 | 5 | 7.2 ± 2.7 | 7.2 ± 2.7 |
| Y. frederiksenii | 18 | 100 | 78 | 56 | 10 ± 2.5 | 40.6 ± 23.8 |
| Y. intermedia | 12 | 92 | 42 | 50 | 9 ± 0.0 | 28.2 ± 26.3 |
| Y. kristensenii | 12 | 75 | 75 | 0 | 11.3 ± 3.3 | 11.3 ± 3.3 |
| Not in Vitek databasea | ||||||
| All | 50 | 72 | 66 | 10.7 ± 3.0 | 44.3 ± 22.8 | |
| Y. aldovae | 12 | 75 | 41 | 10.6 ± 3.5 | 38.6 ± 25.1 | |
| Y. bercovieri | 12 | 75 | 92 | 10.6 ± 3.0 | 54.6 ± 13.4 | |
| Y. mollaretii | 11 | 82 | 54 | 9.9 ± 3.5 | 36.1 ± 26.7 | |
| Y. rohdei | 10 | 80 | 70 | 11.1 ± 2.6 | 44.7 ± 23.6 | |
| Y. ruckeri | 5 | 20 | 80 | 12.2 ± 1.8 | 50.6 ± 21.1 | |
a
For Yersinia spp. not listed in the Vitek database, the correct identification is evaluated only to the genus level.