Table 1 Case characteristics and antimicrobial susceptibility test results of the two C. europaeus strains

β-lactam/β-lactamase inhibitor combinations

AMC

MIC(µg/ml)

> 32/R

> 32/R

TZP

MIC(µg/ml)

> 64/R

> 64/R

SAM

MIC(µg/ml)

16/I

16/I

ATM

MIC(µg/ml)

> 32/R

16/R

CAZ

MIC(µg/ml)

> 32/R

32/R

CRO

MIC(µg/ml)

> 32/R

> 32/R

CXM

MIC(µg/ml)

16/I

16/I

CZO

MIC(µg/ml)

> 16/R

> 32/R

FEP

MIC(µg/ml)

> 16/R

≤ 1/S

FOX

MIC(µg/ml)

16/I

16/I

CTX

K-B(mm)

6/R

18/R

AMP

K-B(mm)

6/R

6/R

Quinolones

LVX

K-B(mm)

24/S

18/I

CIP

K-B(mm)

22/I

28/S

Carbapenems

ETP

MIC(µg/ml)

> 2/R

> 2/R

IMP

MIC(µg/ml)

> 8/R

4/R

MEM

MIC(µg/ml)

> 8/R

1/S

Sulfonamides

SXT

MIC(µg/ml)

> 4/R

≤ 1/S

Polymyxins

COL

MIC(µg/ml)

≤ 1/S

≤ 1/S

Tetracyclines

TGC

MIC(µg/ml)

≤ 1/S

≤ 1/S

chloromycetin

C

MIC(µg/ml)

16/I

8/S

Aminoglycosides

AMK

MIC(µg/ml)

≤ 8/S

≤ 8/S

GEN

MIC(µg/ml)

8/I

≤ 2/S

TOB

MIC(µg/ml)

8/I

≤ 2/S