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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.