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Table 1 Phenotypic and genotypic characteristics of OXA-232-producing K. pneumoniae isolates

From: Nosocomial spread of OXA-232-producing Klebsiella pneumoniae ST15 in a teaching hospital, Shanghai, China

PFGE type

MLST type

Isolates number

Resistance determinants

Minimal inhibitory concentration (mg/L)

CTX

CAZ

PZT

IPM

MEM

ETP

AK

TGC

PB

SXT

CIP

 A1

ST 15

36

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

2

2

16

> 128

≤0.5

1

> 8

> 16

 A2

ST 15

3

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

32

32

128

> 128

≤0.5

1

> 8

> 16

 A3

ST 15

9

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

1

2

16

> 128

≤0.5

1

> 8

> 16

 A4

ST 15

1

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

1

2

16

> 128

≤0.5

1

> 8

> 16

 A5

ST 15

5

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

1

4

16

> 128

≤0.5

1

> 8

> 16

 A6

ST 15

1

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

1

4

64

> 128

≤0.5

1

> 8

> 16

 A7

ST 15

3

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

4

8

32

> 128

≤0.5

1

> 8

> 16

 A8

ST 15

1

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

1

2

16

> 128

≤0.5

1

> 8

> 16

 A9

ST 15

1

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

64

64

256

> 128

≤0.5

1

> 8

> 16

 A10

ST 15

1

blaCTX-M-15, blaSHV-28, blaTEM-1B, aac(6′)-Ib-cr, qnrB66, oqxAB, fosA, rmtF, sul2

> 64

> 32

> 256

2

4

32

> 128

≤0.5

1

> 8

> 16

 B

ST 15

1

blaCTX-M-15, blaSHV-28, blaTEM-1B, blaPER4, aac(6′)-Ib-cr, qnrB1, oqxAB,rmtF, fosA

> 64

> 32

> 256

1

2

16

> 128

≤0.5

1

> 8

> 16

  1. CTX: cefotaxime, CAZ: Ceftazidime, PZT: piperacillin-tazobactam, IMP: imipenem, MEM: meropenem, ETP: ertapenem, AK: amikacin, TGC: tigecycline, PB: polymyxin B, SXT: sulfamethoxazole/trimethoprim, CIP: ciprofloxacin