Table 1.

Results of antimicrobial susceptibility testing using agar dilution (n=50)

	Number of isolates according to MIC (μg ml–1)
	<0.03	0.03	0.06	0.12	0.25	0.5	1	2	4	8	16	32	64	128	256
Ceftriaxone*	26	7	8	5	–	2	2	–	–	–	–	–	–	–	–
Cefixime*	22	9	3	2	5	5	–	4	–	–	–	–	–	–	–
Azithromycin†	–	–	4	4	13	12	2	6	2	6	–	–	–	1	–
Tetracycline‡	–	–	–	2	5	11	9	20	–	1	2	–	–	–	–
Fosfomycin§	–	–	–	–	–	–	–	–	–	–	19	27	3	1	–

*Susceptible, ≤0.25 µg ml⁻¹; non-susceptible, ≥0.5 µg ml⁻¹.

†Susceptible, ≤1 µg ml⁻¹; non-susceptible, ≥2 µg ml⁻¹.

‡Susceptible, ≤0.25 µg ml⁻¹; intermediate, 0.5–1 µg ml⁻¹; resistant, ≥2 µg ml⁻¹.

§No interpretative criteria have been published by the CLSI.