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Table 1 Susceptibility data of the clinical isolates and the transconjugant

From: Characterization of CTX-M ESBLs in Enterobacter cloacae, Escherichia coli and Klebsiella pneumoniae clinical isolates from Cairo, Egypt

  Zone diameter of inhibition (mm)
Clinical Isolate CTX CTX/CLA CAZ CAZ/CLA TET GEN AMK CIP SXT
Kp4 6 18 18 25 6 8 20 6 ND
Kp8 6 16 19 26 6 8 20 6 ND
Kp15 6 16 18 25 6 8 20 6 ND
ENT 10 20 21 25 20 17 21 30 ND
EC 9 22 15 26 19 19 20 32 6
TcECa 11 31 20 32 25 ND ND ND 33
EC Na azR 34 32 29 29 22 23 ND 28 30
  1. Isolates were tested for susceptibility using disk diffusion according to CLSI guidelines [14].
  2. CTX: cefotaxime, CTX/CLA: cefotaxime/clavulanic acid, CAZ: ceftazidime, CAZ/CLA: ceftazidime/clavulanic acid, TET: tetracycline, GEN: gentamicin; AMK: amikacin; CIP: ciprofloxacin, SXT: sulfamethoxazole/trimethoprim,
  3. TcEC: transconjugant carrying plasmid encoding bla CTX-M-15.
  4. EC Na azR: recipient strain resistant to sodium azide
  5. aTransconjugant was tested by PCR experiment for bla CTX-M-15-like using specific primers [16].
  6. ND: Not determined