. Author manuscript; available in PMC: 2019 Aug 14.

Published in final edited form as: Int J STD AIDS. 2018 Nov 4;30(3):256–263. doi: 10.1177/0956462418799017

Table 2:

Antimicrobials susceptibility test results on 16 isolates by both Agar dilution and Disk-diffusion method

	MIC (μg/ml)/ ZD (mm) values	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	N (%) Resistant/ reduced susceptibility	P-value
Penicillin	MIC	4	1	4	4	4	4	4	4	4	4	1	4	1	4	4	4	13 (81)	0.2
	ZD	6	18	6	6	6	6	6	6	6	6	17	6	18	6	6	6	16 (100)

Tetracycline	MIC	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16 (100)	1.0
	ZD	8	13	16	10	12	10	12	12	12	12	9	11	12	13	11	12	16 (100)

Gentamicin	MIC	4	8	8	4	8	4	8	4	8	4	4	4	4	4	4	4	0 (0)	n/a
	ZD	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Cefixime	MIC	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0 (0)	0.017
	ZD	15	31	31	31	35	31	21	31	32	32	15	26	31	25	26	35	5 (31)

Ceftriaxone	MIC	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0 (0)	0.017
	ZD	35	35	30	32	40	36	40	35	31	40	28	35	35	15	35	35	5 (31)

Ciprofloxacin	MIC	4	2	2	4	2	2	4	2	2	2	4	2	2	1	2	4	16 (100)	1.0
	ZD	8	15	12	12	8	13	16	10	14	13	9	13	15	14	9	9	16 (100)

Azithromycin	MIC	0.06	0.06	0.25	0.125	0.125	0.03	0.06	0.125	0.06	0.125	0.125	0.03	0.03	0.03	0.03	0.06	0 (0)	n/a
	ZD	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	n/a

key:
Antimicrobial	Interpretive criteria
Antimicrobial	Zone diameter (ZD) breakpoint (mm)		MIC breakpoint (μg/ml)
	Susceptible	Resistant	Susceptible	Resistant
Penicillin	≥47	≤26	≤0.06	≥2
Tetracycline	≥38	≤30	≤0.25	≥2
Gentamicin^*	-	-	<8	>16
Cefixime	≥31	--	≤0.25	-
Ceftriaxone	≥35	-	≤0.125	-
Ciprofloxacin	≥41	≤27	≤0.06	≥1
Azithromycin^*	-	≤30	<2	≥2

There are no CLSI breakpoints for gentamicin and azithromycin