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Gonorrhea Treatment Failure: Causes, Consequences, and Management

Although Neisseria gonorrhoeae remains treatable, treatment failure occurs and threatens gonorrhea control.

Causes of Failure

  1. Antimicrobial Resistance (AMR): N. gonorrhoeae has developed resistance to every antibiotic class used (penicillins, tetracyclines, fluoroquinolones, cefixime). Current dual therapy (ceftriaxone 500mg IM + azithromycin 1g oral) is the last reliable regimen. Resistance to ceftriaxone is emerging (Japan, Europe, US).
  2. Reinfection: Sex with untreated or new infected partners. Partner notification and treatment are critical.
  3. Inadequate Treatment: Wrong drug, dose, route; non-adherence; monotherapy (contraindicated).
  4. Host Factors: HIV with low CD4, immunosuppression, anatomic sites with poor drug penetration (pharynx).

Consequences

  • Persistent/recurrent urethritis, cervicitis, pharyngitis, proctitis.
  • Ascending infection: PID (women), epididymitis (men) → infertility, ectopic pregnancy, chronic pelvic pain.
  • Disseminated Gonococcal Infection (DGI): septic arthritis, dermatitis, tenosynovitis, rare endocarditis/meningitis.
  • Enhanced HIV transmission.

    • Prevention and Response

    • Dual therapy adherence: Ceftriaxone 500mg IM (1g if ≥150kg) + azithromycin 1g PO (or doxycycline 100mg BID x7d if azithromycin allergy).
    • Test-of-cure: NAAT at 7-14 days for pharyngeal infection; otherwise if symptoms persist.
    • Partner treatment: Expedited partner therapy (EPT) where legal.
    • Surveillance: GISP (Gonococcal Isolate Surveillance Project) monitors resistance trends.
    • New agents: Zoliflodacin, gepotidacin in late-stage trials.

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