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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