|
Phenotypic test
|
DNA-based test
|
n
|
---|
E-test
|
CD
|
CTX-M
|
TEM
|
SHV
|
Interpretation
|
---|
E. cloacae, n = 6
|
ND
|
ESBL
|
Absent
|
Wild-type
|
Mutated
|
ESBL
|
1
|
ESBL
|
Present
|
Wild-type
|
Absent
|
ESBL
|
4
|
Non-ESBL (MMA55)*
|
ESBL*
|
Absent
|
Wild-type
|
Mutated
|
ESBL*
|
1*
|
E. coli, n = 20
|
ND
|
ESBL
|
Present
|
Wild-type
|
Absent
|
ESBL
|
16
|
Non-ESBL*
|
Present
|
Wild-type
|
Absent
|
ESBL*
|
4*
|
K. pneumoniae, n = 13
|
ND
|
Non-ESBL
|
Absent
|
Absent
|
Absent
|
Non-ESBL
|
2
|
ESBL
|
Absent
|
Wild-type
|
Mutated
|
ESBL
|
3
|
Present
|
Wild-type
|
Absent
|
ESBL
|
1
|
|
Wild-type
|
ESBL
|
5
|
|
Mutated
|
ESBL
|
1
|
ESBL (R080)*
|
ESBL*
|
Absent
|
Absent
|
Absent
|
Non-ESBL*
|
1*
|
Klebsiella spp., n = 1
|
ND
|
ESBL
|
Present
|
Wild-type
|
Absent
|
ESBL
|
1
|
P. mirabilis, n = 4
|
ND
|
ESBL
|
Absent
|
Wild-type
|
Mutated
|
ESBL
|
3
|
Non-ESBL*
|
Present
|
Absent
|
Absent
|
ESBL*
|
1*
|
S. marcescens, n = 1
|
ND
|
ESBL
|
Present
|
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).