Table 3.
Strain no. | MALDI–TOF MS | API 20E | Bio-type | Serotype | Presence of the virulence genes | |||
---|---|---|---|---|---|---|---|---|
Profile | ID (%) | ail, ystA yadA, virF | ystB | myfA, hreP | ||||
1–6 | Y. enterocolitica, 1A | 1 155 723 | 98·3 | 1A | O:5 | − | + | V |
7–9 | Y. enterocolitica, 1A | 1 155 723 | 98·3 | 1A | O:8 | − | + | V |
10–14 | Y. enterocolitica, 1A | 1 155 723 | 98·3 | 1A | NT | − | + | V |
15–16 | Y. enterocolitica, NT | 1 155 723 | 98·3 | 1A | NT | − | − | − |
17 | Y. enterocolitica, NT | 1 114 321 | 99·6 | 3 or 5 | O:(1,2,)3 | + | − | + |
18–19 | Y. kristensenii | 1 114 503 | 89·2 | NT | NT | − | V | − |
20 | Yersinia sp. | 1 155 733 | 98·5* | NT | NT | − | − | − |
MALDI–TOF MS, Matrix-assisted laser desorption/ionization–time of flight mass spectrometry; NT, biotype not typable; V, the genes were detected in some strains.
ID for Y. frederiksenii/intermedia.