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. 2016 Jan 28;57(2):350–357. doi: 10.3349/ymj.2016.57.2.350

Table 1. Comparison of the Antimicrobial Susceptibilities of TRNG and Non-TRNG Isolates during 2004–2007, 2008–2009, and 2010–2011.

Antimicrobial agent	TRNG isolates												Non-TRNG isolates
	2004-2007 (14)			2008-2009 (27)			2010-2011 (17)			Total (58)			2004-2007 (115)			2008-2009 (136)			2010-2011 (53)			Total (304)
	MIC₅₀	MIC₉₀	% S	MIC₅₀	MIC₉₀	% S	MIC₅₀	MIC₉₀	% S	MIC₅₀	MIC₉₀	% S	MIC₅₀	MIC₉₀	% S	MIC₅₀	MIC₉₀	% S	MIC₅₀	MIC₉₀	% S	MIC₅₀	MIC₉₀	% S
Penicillin^*	0.25	1	0	0.25	>128	0	1	>128	0	0.25	>128	0	2	8	0	1	32	0	1	64	0	2	8	0
Ceftriaxone	≤0.008	≤0.008	100	≤0.008	0.06	100	0.03	0.06	100	≤0.008	≤0.008	100	0.06	0.12	100	0.03	0.12	100	0.03	0.12	100	0.06	0.12	100
Cefixime	≤0.008	≤0.008	100	≤0.008	0.06	100	0.06	0.25	100	≤0.008	≤0.008	100	0.06	0.12	99	0.03	0.12	100	0.03	0.12	98	0.06	0.12	100
Spectinomycin	32	32	100	32	32	100	16	32	100	32	32	100	32	32	100	32	32	100	16	32	100	32	32	100
Ciprofloxacin	≤0.008	0.12	93	2	8	44	4	16	18	≤0.008	4	61	8	16	10	8	16	16	4	32	6	8	16	15

TRNG, high-level tetracycline-resistant Neisseria gonorrhoeae; MIC, minimum inhibitory concentration (mg/L).

^*The rates of penicillinase-producing strains of Neisseria gonorrhoeae were 11% in the non-TRNG isolates and 17% in the TRNG isolates.