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Table 2 In vitro antimicrobial Profile by MIC (µg/mL) using E- test method (n = 122)

From: Antimicrobial resistance of Neisseria gonorrhoeae isolated from patients attending sexually transmitted infection clinics in Urban Hospitals, Lusaka, Zambia

 

Number of isolate (%)

MIC (µg/mL)

Antimicrobial Agent

S

I

R

Range

MIC50

MIC90

Ciprofloxacin

36 (29.5)

12(10.6)

73 (59.8)

0.016-32

2

8

Ceftriaxone

122 (100)

0 (0)

0 (0)

0.016–0.19

0.016

0.125

Spectinomycin

114 (93.4)

2(1.6)

6(4.9)

0.19–192

2

24

Cefixime

120 (98.4)

0(0)

2 (1.6)

0.016-1

0.032

0.19

Azithromycin

116 (95.1)

0(0)

6(4.9)

0.016-4

0.125

0.75

Penicillin G

4 (3.3)

14 (11.5)

104 (85.2)

0.047–32

32

32

Tetracycline

30 (24.5)

08 (6.6)

84 (68.9)

0.032–64

4

8

  1.  S susceptible, I intermediate, R resistant, MIC50 and MIC90: MIC value to inhibit 50% and 90% of the strains tested respectively