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Table 1 Antimicrobial susceptibility of Neisseria gonorrhoeae isolates (n = 126) from Hefei, China (2014–2015)

From: Antimicrobial susceptibility of Neisseria gonorrhoeae isolates from Hefei (2014–2015): genetic characteristics of antimicrobial resistance

Antimicrobial breakpoints (susceptible/resistant [mg/L]) Number MIC (mg/L)
Susceptible Intermediate Resistant Range MIC50 MIC90
Penicillin G (S ≤ 0.06/R ≥ 2) 0 33 93 0.125 to >8 2 >8
Tetracycline (S ≤ 0.25/R ≥ 2) 2 21 103 0.25 to >16 4 >16
Ciprofloxacin (S ≤ 0.06/R ≥ 1) 0 0 126 0.25 to >8 >8 >8
Azithromycin(S ≤ 0.25/R ≥ 1) 48 42 36 ≤0.015 to >2048 0.5 > 2048
Spectinomycin (S ≤ 32/R ≥ 128) 126 0 0 8 to 32 16 32
Cefixime (S ≤ 0.25) 126 0 0 0.004 to 0.25 0.03 0.06
Ceftriaxone(S ≤ 0.25) 126 0 0 0.004 to 0.25 0.06 0.125
  1. MIC minimum inhibitory concentration