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Table 1 Detection of β-lactamases Bla-A and Bla-B in Y. intermedia and Y. frederiksenii isolated from India

From: Characteristics of β-lactamases and their genes (blaA and blaB) in Yersinia intermedia and Y. frederiksenii

Species

Source (n)

Detection of Bla-A

Detection of Bla-B

  

Number positivea (%)

Synergyb (%)

Number positivec (%)

Y. intermedia

Clinical (4)

4 (100)

-

4 (100)

 

Wastewater (8)

8 (100)

4 (50)

8 (100)

 

Pig throat (22)

22 (100)

5 (22.7)

22 (100)

Y. frederiksenii

Clinical (6)

6 (100)

-

6 (100)

 

Pig throat (9)

9 (100)

1 (11.1)

9 (100)

  1. n number of strains
  2. anumber of strains with annular radii between 2–8 mm (diameter 10–22 mm) of the zone of inhibition around ticarcillin disc
  3. bSynergy – additional zone of inhibition between ticarcillin and co-amoxiclav discs
  4. cnumber of strains that showed characteristic flattening of the zone of inhibition around cefotaxime disc.