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Table 2 Gene cassettes detected in integron positive isolates obtained from urine and blood cultures

From: Comparison of integron mediated antimicrobial resistance in clinical isolates of Escherichia coli from urinary and bacteremic sources

Source

Number of integron positive isolates (%)

Number of isolates with VR (%)

GCa

Number of isolates with GC (%)

E. coliisolated from urine cultures (n = 361)

66 (18.2)

27 (40.9)

DfrA17-AadA5

14 (51.8)

DfrA5

4 (14.8)

DfrA12

3 (11.1)

DfrA7

2 (7.4)

DfrA17

2 (7.4)

AadA2

1 (3.7)

AadA5

1 (3.7)

E. coliisolated from blood cultures (n = 109)

26 (23.8)

4 (15.4)

DfrA17

4 (100)

  1. aDrfA17, DfrA5, DfrA12, DfrA7 encode dihydrofolate reductase conferring resistance to trimethoprim; AadA2, AadA5 encode aminoglycoside adenyltransferase conferring resistance to spectinomycin/streptomycin [9, 10]