Table 1

Susceptibility to antimicrobial agents in isolates of N gonorrhoeae

	MIC (μg/ml)			Number and % of strains
Agents (years) (n)	Range	50%	90%	Intermediate	Resistant
Penicillin
1985–6 (507)	0.008–>128	0.125	16	315 (62.2)	72 (14.2)
1988 (72)	0.032–>128	0.5	>128	38 (52.8)	32 (44.4)
1995–5 (81)	0.001–128	0.125	4	51 (63)	8 (10)
Cefuroxime
1985 (507)	0.008–2	0.06	0.125	1 (0.2)
1988 (72)	0.016–0.5	0.125	0.5
1995–6 (81)	0.001–0.5	0.032	0.125
Ceftriaxone
1995–6 (81)	0.001–0.008	0.001	0.001
Ciprofloxacin
1985–6 (507)	0.002–0.06	0.004	0.016
1995–6 (81)	0.001–0.5	0.008	0.032	1 (1.2)
Ofloxacin
1988 (72)	0.008–0.063	0.008	0.016
1995–6 (81)	0.002–0.5	0.016	0.032	1 (1.2)
Tetracycline
1985–6 (507)	0.063–8	2	4	219 (43.2)	263 (51.8)
1995–6 (81)	0.063–8	2	4	28 (37.4)	44 (58.6)
Minocyclin
1995–5 (81)	0.032–8	0.5	2
Erythromycin
1985–6 (507)	0.032–2	0.25	0.5	23 (4.5)
1995–6 (81)	0.063–8	0.5	4	24 (29.6)	1 (1.2)
Azithromycin
1995–6 (81)	0.016–2	0.032	0.125
Spectinomycin
1985–6 (507)	2–32	16	16
1988 (72)	2–16	16	16
1995–6 (81)	2–16	8	16