|
E-test
|
DNA-based test
|
n
|
---|
CTX-M
|
TEM
|
SHV
|
Interpretation
|
---|
E. cloacae, n = 16
|
ESBL
|
Absent
|
Wild-type
|
Mutated
|
ESBL
|
1
|
Present
|
Absent
|
Absent
|
ESBL
|
1
|
Wild-type
|
Absent
|
ESBL
|
8
|
ND
|
Absent
|
Wild-type
|
Mutated
|
ESBL
|
1
|
Present
|
Wild-type
|
Absent
|
ESBL
|
4
|
Non-ESBL
|
Absent
|
Wild-type
|
Mutated
|
ESBL*
|
1*
|
E. coli, n = 119
|
ESBL
|
Present
|
Absent
|
Absent
|
ESBL
|
34
|
Wild-type
|
Absent
|
ESBL
|
50
|
Mutated
|
ESBL
|
2
|
ND
|
Present
|
Wild-type
|
Absent
|
ESBL
|
20
|
Non-ESBL
|
Absent
|
Absent
|
Absent
|
Non-ESBL
|
3
|
Absent
|
Wild-type
|
Absent
|
Non-ESBL
|
10
|
K. pneumoniae, n = 147
|
ESBL
|
Absent
|
Absent
|
Absent
|
Non-ESBL*
|
1*
|
Wild-type
|
Mutated
|
ESBL
|
8
|
Present
|
Absent
|
Wild-type
|
ESBL
|
4
|
Wild-type
|
Absent
|
ESBL
|
4
|
Wild-type
|
ESBL
|
73
|
Mutated
|
ESBL
|
41
|
ND
|
Absent
|
Absent
|
Absent
|
Non-ESBL
|
2
|
Wild-type
|
Mutated
|
ESBL
|
3
|
Present
|
Wild-type
|
Absent
|
ESBL
|
1
|
Wild-type
|
ESBL
|
5
|
Mutated
|
ESBL
|
1
|
Non-ESBL
|
Absent
|
Absent
|
Absent
|
Non-ESBL
|
2
|
Wild-type
|
Non-ESBL
|
1
|
Wild-type
|
Wild-type
|
Non-ESBL
|
1
|
Klebsiella spp., n = 30
|
ESBL
|
Present
|
Absent
|
Wild-type
|
ESBL
|
1
|
Wild-type
|
Absent
|
ESBL
|
13
|
Wild-type
|
ESBL
|
5
|
Mutated
|
ESBL
|
10
|
ND
|
Present
|
Wild-type
|
Absent
|
ESBL
|
1
|
P. mirabilis, n = 10
|
ESBL
|
Present
|
Wild-type
|
Absent
|
ESBL
|
1
|
Wild-type
|
ESBL
|
1
|
Mutated
|
ESBL
|
2
|
ND
|
Absent
|
Wild-type
|
Mutated
|
ESBL
|
3
|
Present
|
Absent
|
Absent
|
ESBL
|
1
|
Non-ESBL
|
Absent
|
Absent
|
Absent
|
Non-ESBL
|
2
|
S. marcescens, n = 6
|
ESBL
|
Present
|
Wild-type
|
Absent
|
ESBL
|
5
|
ND
|
Present
|
Wild-type
|
Absent
|
ESBL
|
1
|
M. morganii, n = 2
|
ESBL
|
Present
|
Absent
|
Absent
|
ESBL
|
1
|
Wild-type
|
Absent
|
ESBL
|
1
|
- * Isolates for which genotypic and phenotypic results are discordant. Both discordant isolates and isolates for which E-test yielded a ‘ND’ result (n = 43) were re-tested using the combination disk test (CDT).