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Table 4 Prevalence of beta-lactamase genes among isolates

From: Molecular characteristics of antibiotic-resistant Escherichia coli and Klebsiella pneumoniae strains isolated from hospitalized patients in Tehran, Iran

No (%) of isolates

blaTEM

blaSHV

blaCTXM

blaTEM, blaSHV

blaTEM, blaCTXM

blaSHV, blaCTXM

blaTEM, blaSHV, blaCTXM

blaTEM, blaSHV, blaCTXM, blaNDM

E. coli (n: 113)

19 (16.8%)

3 (2.6%)

16 (14.1%)

8 (7.1%)

19 (16.8%)

3 (2.6%)

12 (10.6%)

0

K. pneumoniae (n: 52)

13 (25%)

5 (9.6%)

1 (1.9%)

4 (7.7%)

7 (13.5)

3 (5.8%)

10 (19.2%)

6 (11.5%)