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Table 4 SIR agreement rate of Neisseria gonorrhoeae isolates by CDS/CLSI disc diffusion against MIC by Etest (All 100 isolates were sensitive to ceftriaxone and spectinomycin by all three methods therefore are not shown in this table)

From: Antimicrobial susceptibility testing of Neisseria gonorrhoeae isolates in Pakistan by Etest compared to Calibrated Dichotomous Sensitivity and Clinical Laboratory Standards Institute disc diffusion techniques

 

Category

Etest

Complete agreement

     

Concordant results

Discordant Results

  

S

I

R

  

CDS

Penicillin G

S

06

04

00

60

40

 

I

02

11

00

  
 

R

00

34

43

  

Ciprofloxacin

S

00

00

00

90

10

 

I

00

12

08

  
 

R

00

02

78

  

Azithromycin

S

99

00

00

100

00

 

I

00

00

00

  
 

R

00

00

01

  

CLSI

Penicillin G

S

04

00

00

75

25

 

I

04

29

01

  
 

R

00

20

42

  

Ciprofloxacin

S

00

00

00

86

14

 

I

00

02

02

  
 

R

00

12

84

  

Tetracycline

S

01

02

00

62

37

 

I

10

20

10

  
 

R

01

15

41

  

Azithromycina

S

99

00

00

100

00

 

I

00

00

00

  
 

R

00

00

01

  
  1. SIR: Sensitive, intermediate, resistant
  2. Tetracycline was tested with CLSI method only
  3. aBSAC break points were used for Azithromycin