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Table 2 Results of S. pneumoniae serotype distribution and vancomycin MIC by Etest strip and broth microdilution method, containing vancomycin gradients of 0.016–256 μg/ml and 0.5–128 μg/well respectively

From: Determination of vancomycin minimum inhibitory concentration for ceftazidime resistant Streptococcus pneumoniaein Iran

Site of infection

Internal code number

Serotype or serogroup

Minimum inhibitory concentration ranges

Maximum zone of inhibition

MIC ≥0.1 ≤ 1 μg/ml

MIC ≥1 ≤ 2 μg/ml

MIC ≥2 ≤ 6 μg/ml

MIC ≥6 ≤ 10 μg/ml

Wounds

104

6

0.38 μ g/ml

   

2.3 mm

105

5

0.38 μg/ml

   

2.1 mm

381

10

1 μg/ml

   

1.8 mm

Lung

201; 102; 13; 120

6

0.38 μg/ml

   

2.9 mm

0.50 μg/ml

   

1.8 mm

0.75 μg/ml

   

2.2 mm

1 μg/ml

   

1.7 mm

106; 125;777

1

0.25 μg/ml

   

2.3 mm

0.38 μg/ml

   

2 mm

0.75 μg/ml

   

2 mm

501

4

0.125 μg/ml

   

1 mm

124; 130; 83

2

0.19 μg/ml

   

2.1 mm

0.75 μg/ml

   

1.5 mm

1 μg/ml

   

2 mm

6; 117

7

0.5 μg/ml

   

2 mm

0.75 μg/ml

   

1.8 mm

34; 107; 48;28

8

1 μg/ml

   

2.2 mm

 

1.5 μg/ml

  

3 mm

1 μg/ml

   

2 mm

1 μg/ml

   

2.4 mm

202

G

1 μg/ml

   

2 mm

Blood

133

1

0.38 μg/ml

   

2.1 mm

39

2

1 μg/ml

   

2 mm

116

4

0.5 μg/ml

   

2.3 mm

131; 121

6

0.25 μg/ml

   

2.5 mm

0.38 μg/ml

   

2.5 mm

89

G

0.50 μg/ml

   

2 mm

126; 40

17

   

8 μg/ml

1 mm

 

1.5 μg/ml

  

1 mm

35

18

0.75 μg/ml

   

2.2 mm

Eye

101

2

0.38 μg/ml

   

2.5 mm

5; 996; 208; 129

6

0.38 μg/ml

   

2.5 mm

1 μg/ml

   

1 mm

1 μg/ml

   

2 mm

1 μg/ml

   

1/5 mm

502; 50; 53; 7

19

0.38 μg/ml

   

2.1 mm

0.5 μg/ml

   

2 mm

0.5 μg/ml

   

2.5 mm

1 μg/ml

   

2.5 mm

14

14

0.5 μg/ml

   

1.7 mm

CSF

51

8

1 μg/ml

   

3 mm

109; 111

20

 

1.5 μg/ml

  

2 mm

  

6 μg/ml

 

1 mm

Throat

128

7

1 μg/ml

   

2 mm

123

20

  

4 μg/ml

 

1 mm

103

4

0.38 μg/ml

   

2.4 mm

108

14

  

5 μg/ml

 

1 mm

Nostrils

778; 49

7

0.5 μg/ml

   

1.5 mm

0.5 μg/ml

   

2.5 mm

Sinus

115

20

1 μg/ml

   

1.7 mm