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Table 1 Biochemical tests used for Yersinia enterocolitica biotyping based on Wauters [39, 41]

From: Identification of Yersinia enterocolitica isolates from humans, pigs and wild boars by MALDI TOF MS

Y. enterocolitica biotypes pathogenicity against humans Reaction of biotypes
Lipasea Esculin Indole Xylosea Trehalosea Pyrazinamidase β -D-Glucosidasea Voges-Proskauer
Nonpathogenic 1A + + + + + + + +
Highly pathogenic 1B + + + + +
Weakly pathogenic 2 (+) + + +
3 + + + (c)
4 + +
5 V (+)
  1. () = Delayed reaction; V = variable reaction; (c) Biotype of serotype O:3 found in Japan [39]; a feature included in VITEK® 2 Compact