From: Frequency of quinolone resistance genes among extended-spectrum β-lactamase (ESBL)-producing Escherichia coli strains isolated from urinary tract infections
Qnr A,B, and S
ESBL
Patients
Positive
Negative
Outpatients
Inpatients
QnrA
6
4
8
2
QnrB
13
12
9
QnrS
30
11
22
19
QnrS-B
QnrA-S
0
3
1
QnrA-B
QnrA-B-S
Total isolates
58
42
59
41
100