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Table 2 Antimicrobial susceptibility of Haemophilus species from patients with pneumonia. Comparison of antimicrobial susceptibility between CLSI 2004–2011 and EUCAST 2012–2014 criteria

From: No development of ciprofloxacin resistance in the Haemophilus species associated with pneumonia over a 10-year study

   

Number of patients with Haemophilus species = 82

    

Drug groups

Active substance

No. using antibiotics (%)

No. of antibiotic tests on antibiogram (%)

Sensitive (%)

Inter-mediate (%)

Resistant (%)

P value compared with Ampicillin + Sulbactam

P value compared with Ciprofloxacin

P value CAP compared to NAP

Penicillins

Ampicillin

1 (1.2)

82 (100)

61 (74.4)

1 (1.2)

20 (24.4)

0.011

<0.0001

 
 

 CAP

0

53 (100)

38 (71.7)

1 (1.9)

14 (26.4)

0.010

<0.0001

0.730

 

 NAP

1 (3.8)

26 (100)

20 (76.9)

0

6 (23.1)

0.066

<0.0001

0.730

 

 CLSI

1 (2.9)

34 (100)

24 (70.6)

1 (2.9)

9 (26.5)

0.019

<0.0001

 
 

 EUCAST

0

48 (100)

38 (79.2)

0

11 (22.9)

0.028

<0.0001

 
 

Piperacillin

1 (1.2)

24 (29.3)

19 (79.2)

0

5 (20.8)

0.128

0.0001

 
 

 CAP

1 (1.9)

12 (22.6)

8 (66.7)

0

4 (33.3)

0.022

<0.0001

0.430

 

 NAP

0

10 (38.5)

9 (90.0)

0

1 (10.0)

0.848

0.0167

0.430

 

 CLSI

1 (2.9)

24 (70.6)

19 (79.2)

0

5 (20.8)

0.128

0.0001

 
 

 EUCAST

0

0

0

0

0

1.0

1.0

 

Penicillin + Beta- lactamase inhibitors

Ampicillin + Sulbactam

28 (34.1)

82 (100)

74 (90.2)

2 (2.4)

6 (7.3)

 

0.016

 
 

 CAP

23 (43.4)

53 (100)

47 (88.7)

2 (3.8)

4 (7.5)

0.905

0.008

0.604

 

 NAP

4 (15.4)

26 (100)

24 (92.3)

0

2 (7.7)

0.723

0.042

0.604

 

 CLSI

12 (35.3)

34 (100)

29 (85.3)

2 (5.9)

3 (8.8)

0.619

0.002

 
 

 EUCAST

16 (33.3)

48 (100)

45 (93.8)

0

3 (6.3)

0.533

0.075

 
 

Piperacillin + Sulbactam

8 (9.8)

23 (28.0)

22 (95.7)

0

1 (4.3)

0.651

0.169

 
 

 CAP

2 (3.8)

11 (20.8)

10 (90.9)

0

1 (9.1)

0.856

0.024

0.622

 

 NAP

4 (15.4)

10 (38.5)

10 (100)

0

0

0.586

1.0

0.622

 

 CLSI

8 (23.5)

23 (67.6)

22 (95.7)

0

1 (4.3)

0.651

0.169

 
 

 EUCAST

0

0

0

0

0

1.0

1.0

 
 

Piperacillin + Tazobactam

24 (29.3)

79 (96.3)

77 (97.5)

0

2 (2.5)

0.135

0.354

 
 

 CAP

16 (30.2)

51 (96.2)

49 (96.1)

0

2 (3.9)

0.375

0.199

0.592

 

 NAP

8 (30.8)

26 (100)

26 (100)

0

0

0.254

1.0

0.592

 

 CLSI

8 (23.5)

31 (91.2)

29 (93.5)

0

2 (6.5)

0.667

0.070

 
 

 EUCAST

16 (33.3)

48 (100)

48 (100)

0

0

0.083

1.0

 

Cephalosporins

Cefuroxime

3 (3.7)

82 (100)

73 (89.0)

2 (2.4)

7 (8.5)

0.961

0.009

 
 

 CAP

0

53 (100)

46 (86.8)

1 (1.9)

6 (11.3)

0.715

0.004

0.492

 

 NAP

3 (11.5)

26 (100)

24 (92.3)

1 (3.8)

1 (3.8)

0.771

0.042

0.492

 

 CLSI

3 (8.8)

34 (100)

28 (82.4)

1 (2.9)

5 (14.7)

0.454

0.0005

 
 

 EUCAST

0

48 (100)

45 (93.8)

1 (2.1)

2 (4.2)

0.760

0.075

 
 

Cefotaxime

0

80 (97.6)

78 (97.5)

0

2 (2.5)

0.13

0.359

 
 

 CAP

0

52 (98.1)

50 (96.2)

0

2 (3.8)

0.362

0.206

0.598

 

 NAP

0

26 (100)

26 (100)

0

0

0.254

1.0

0.598

 

 CLSI

0

32 (94.1)

31 (96.9)

0

1 (3.1)

0.461

0.279

 
 

 EUCAST

0

48 (100)

47 (97.9)

0

1 (2.1)

0.235

0.427

 

Gyrase inhibitors

Ciprofloxacin

5 (6.1)

81 (98.8)

81 (100)

0

0

0.016

  
 

 CAP

2 (3.8)

52 (98.1)

52 (100)

0

0

0.067

1.0

1.0

 

 NAP

2 (7.7)

26 (100)

26 (100)

0

0

0.254

1.0

1.0

 

 CLSI

2 (5.9)

33 (97.1)

33 (100)

0

0

0.177

1.0

 
 

 EUCAST

3 (6.3)

48 (100)

48 (100)

0

0

0.083

1.0

 
 

Levofloxacin

4 (4.9)

63 (76.8)

62 (98.4)

0

1 (1.6)

0.121

0.525

 
 

 CAP

4 (7.5)

46 (86.8)

46 (100)

0

0

0.091

1.0

0.253

 

 NAP

0

17 (65.4)

16 (94.1)

0

1 (5.9)

0.787

0.090

0.253

 

 CLSI

0

16 (47.1)

16 (100)

0

0

0.427

1.0

 
 

 EUCAST

4 (8.3)

47 (97.9)

46 (97.9)

0

1 (2.1)

0.244

0.419

 

Macrolide

Erythromycin

0

81 (98.8)

43 (53.1)

7 (8.6)

31 (38.3)

<0.0001

<0.0001

 
 

 CAP

1 (1.9)

52 (98.1)

27 (51.9)

6 (11.5)

19 (36.5)

<0.0001

<0.0001

0.458

 

 NAP

0

26 (100)

13 (50)

1 (3.8)

12 (46.2)

<0.0001

<0.0001

0.458

 

 CLSI

1 (2.9)

33 (97.1)

24 (72.7)

4 (12.1)

5 (15.2)

0.037

<0.0001

 
 

 EUCAST

0

48 (100)

19 (39.6)

3 (6.3)

26 (54.2)

<0.0001

<0.0001

 
  1. Results of susceptibility testing of the active substances are shown in bold according to both CLSI and EUCAST criteria. Results are also shown to compare CAP and NAP
  2. Abbreviations: CAP community-acquired pneumonia, CLSI Clinical and Laboratory Standards Institute, EUCAST Europe-wide standards for susceptibility testing, NAP nosocomial-acquired pneumonia, MIC minimum inhibitory concentration
  3. Significant P values shown in bold