Table 1.

Susceptibility to ceftriaxone and ciprofloxacin of Neisseria gonorrhoeae over the study period 2014–2020

Year	Total number of isolates (N=395)		Ceftriaxone (n=389)						Ciprofloxacin (n=364)
		No data	R	S	MIC50 (µg/mL)	MIC90 (µg/mL)	No data	R	RS	S	MIC50 (µg/mL)	MIC90 (µg/mL)
2014	31	3	0	28	0.002	0.02	2	29	0	0	2	4
2015	67	0	3	64	0.002	0.006	21	46	0	0	2	3
2016	35	0	1	34	0.002	0.02	4	31	0	0	1	2
2017	56	2	4	50	0.002	0.016	1	50	2	3	1	3
2018	82	1	3	78	0.002	0.004	2	79	0	1	1.5	3
2019	82	0	3	79	0.002	0.006	1	81	0	0	2	4
2020	42	0	3	39	0.002	0.004	0	42	0	0	1.5	3

Breakpoints used: for ceftriaxone: S: ≤0.125 µg/mL, R: >0.125 µg/mL; for ciprofloxacin: S: ≤0.03 µg/mL, R: >0.06 µg/mL, RS: >0.03–0.06 µg/mL.

MIC₅₀: lowest concentration of the antimicrobial at which 50% of the isolates are inhibited.

MIC₉₀: lowest concentration of the antimicrobial at which 90% of the isolates are inhibited.

MIC, minimum inhibitory concentration; R, resistant; RS, reduced susceptible; S, susceptible.