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Table 1 Criteria for the phenotypes of multiple drug resistance in N. gonorrhoeae

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

Resistant phenotype

PEN

TET

CIP

CRO

CMRNG

≥2

≥2

na

na

PEN-TET

≥2

≥2

na

na

PEN-CIP

≥2

na

≥1

na

PEN-CRO

≥2

na

na

≥0.125

TET-CIP

na

≥2

≥1

na

TET-CRO

na

≥2

na

≥0.125

CIP-CRO

na

na

≥1

≥0.125

PEN-TET-CIP

≥2

≥2

≥1

na

PEN-TET-CRO

≥2

≥2

na

≥0.125

PEN-CIP-CRO

≥2

na

≥1

≥0.125

TET-CIP-CRO

na

≥2

≥1

≥0.125

PEN-TET-CIP-CRO

≥2

≥2

≥1

≥0.125

  1. CMRNG: chromosomally-mediated resistant N. gonorrhoeae, non-penicillinase-producing N. gonorrhoeae (Non-PPNG) and tetracycline MIC <16 mg/L.
  2. PEN: penicillin; TET: tetracycline; CIP: ciprofloxacin; CRO: ceftriaxone (nonsusceptible); na: not applicable; MICs are presented as mg/L; Spectinomycin (SPT) was not listed.