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Table 2 Susceptibility of N. gonorrhoeae isolates to ceftriaxone in Shanghai

From: Twenty-five-year changing pattern of gonococcal antimicrobial susceptibility in Shanghai: surveillance and its impact on treatment guidelines

Year N Reduced* Nonsusceptible** MIC 50 MIC 90 MIC range
n % n % (mg/L) (mg/L) (mg/L)
1995 117 0 0.00 0 0.00 0.008 0.015 0.008-0.03
1996 206 2 0.97 2 0.97 0.008 0.03 0.002-0.25
1997 208 7 3.37 2 0.96 0.008 0.03 0.002-0.25
1998 180 29 16.11 14 7.78 0.03 0.06 0.004-0.25
1999 208 27 12.98 12 5.77 0.015 0.06 0.002-0.25
2000 225 47 20.89 15 6.67 0.03 0.06 0.004-0.25
2001 230 39 16.96 16 6.96 0.03 0.06 0.004-0.25
2002 210 30 14.29 20 9.52 0.03 0.06 0.004-0.25
2003 302 57 18.87 34 11.26 0.03 0.125 0.004-0.25
2004 166 53 31.93 20 12.05 0.03 0.125 0.004-0.25
2005 83 26 31.33 5 6.02 0.03 0.06 0.004-0.125
2006 128 51 39.84 18 14.06 0.06 0.125 0.008-0.25
2007 200 64 32.00 10 5.00 0.03 0.06 0.004-0.25
2008 71 25 35.21 14 19.72 0.06 0.125 0.008-0.125
2009 157 36 22.93 18 11.46 0.03 0.125 0.008-0.125
2010 119 34 28.57 9 7.56 0.03 0.06 0.008-0.125
2011 135 55 40.74 14 10.37 0.06 0.125 0.008-0.125
2012 99 14 14.14 7 7.07 0.03 0.06 0.004-0.125
2013 109 43 39.45 15 13.76 0.06 0.125 0.004-0.25
Total 3153 639 20.30 245 7.80    
  1. *: CRO MIC = 0.06 mg/L; **: CRO MIC ≥ 0.125 mg/L.