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Table 2 MIC distributions for cefotaxime-resistant and piperacillin-tazobactam susceptible E. coli and K. pneumoniae from blood culture isolates tested by Vitek2

From: Comparable outcomes for β-lactam/β-lactamase inhibitor combinations and carbapenems in definitive treatment of bloodstream infections caused by cefotaxime-resistant Escherichia coli or Klebsiella pneumoniae

AMC MIC

N (%)

FOX MIC

N (%)

TZP MIC

N (%)

4

19 (21.8)

<=4

60 (72.3)

<=4

65 (70.7)

8

19.0 (21.8)

8

6 (7.2)

8.0

27.0 (29.3)

16

32 (36.8)

16

8 (9.6)

-

-

> = 32

17 (19.5)

32

9 (10.8)

-

-

-

-

> = 64

9 (10.8)

-

-

Total

87

 

83

 

92

  1. AMC = amoxicillin-clavulanate, FOX = cefoxitin, TZP = piperacillin-tazobactam.