TABLE 1.

Cephalosporin susceptibilities of clinical strains of N. gonorrhoeae isolated in central Japan from 2002 to 2005

Cephalosporin and yr in which strains were isolated (no. of strains)	MIC (μg/ml)
	Range	MIC50	MIC90
Cefozopran
2002 (216)	0.015-32	0.5	16
2003 (170)	0.015-64	0.5	16
2004 (160)	0.008-32	0.5	16
2005 (75)	0.03-32	1	16
Cefdinir
2002 (216)	0.004-2	0.06	1
2003 (170)	0.004-4	0.125	2
2004 (160)	0.004-2	0.06	1
2005 (75)	0.008-2	0.125	1
Cefixime
2002 (216)	0.001-2	0.06	0.5
2003 (170)	0.002-2	0.06	1
2004 (160)	0.004-1	0.06	0.5
2005 (75)	0.004-1	0.125	0.5
Ceftriaxone
2002 (216)	0.001-1	0.06	0.125
2003 (170)	<0.001-0.5	0.06	0.25
2004 (160)	<0.001-0.25	0.06	0.125
2005 (75)	0.002-2	0.03	0.125