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Table 1 Third-generation cephalosporin-resistant (3GC-R) and carbapenem-resistant Gram-negative bacteria isolated from 4142 episodes of bacteraemia in 3887 patients with haematological malignancies, 2008–2018

From: Third-generation cephalosporin resistant gram-negative bacteraemia in patients with haematological malignancy; an 11-year multi-centre retrospective study

 

Total

3GCR, N

Carbapenem-resistant among 3GCR, N

Enterobacterales not constitutively producing AmpC

464

85

1

- Escherichia coli

342

58

0

- Klebsiella pneumoniae

80

25

1

- Other*

42

3

0

Enterobacterales constitutively producing AmpC**

76

76

0

- Citrobacter freundii

8

8

0

- Enterobacter species

37

37

0

- Klebsiella aerogenes

6

6

0

- Serratia species

22

22

0

- Morganella species

3

3

0

Pseudomonas aeruginosa

86

8

5

Acinetobacter species

10

7

0

Stenotrophomonas maltophilia***

22

22

22

Other non-fermentative gram-negative bacteria

39

15

9

Other gram-negative bacteria

18

8

1

Total

715

221

38

  1. *Other Enterobacterales not constitutively producing AmpC were: Citrobacter species (non-freundii), Pantoea species, Proteus species and Salmonella species
  2. **Enterobacterales constitutively producing AmpC (e.g. Citrobacter freundii, Enterobacter cloacae complex, Klebsiella aerogenes and Serratia marcescens) were regarded as intrinsically resistant and therefore labelled as 3GC-R regardless of MIC
  3. ***Stenotrophomonas maltophilia was categorized as 3GC-R and carbapenem resistant, regardless of MIC