Macrolide and fluoroquinolone resistance of Mycoplasma genitalium in southern Spain, 2018-2019

Sex Transm Infect. 2021 Feb;97(1):8-10. doi: 10.1136/sextrans-2019-054386. Epub 2020 Jul 13.

Abstract

Objectives: In recent years, resistance in Mycoplasma genitalium (MG) to first-line (azithromycin) and second-line (moxifloxacin) treatment has been increasingly reported worldwide, however, no data regarding the south of Spain are available.

Methods: To determine resistance rates, MG-positive samples collected from June 2018 to June 2019 were analysed by sequencing the 23S rRNA and parC genes.

Results: A total of 77 patients (24 men having sex with men (MSM), 30 heterosexual men and 23 women) were included. Resistance-associated mutations against macrolide and fluoroquinolones were found in 36.4% (95% CI 25.7% to 48.1%) and 9.1% (95% CI 3.7% to 17.8%) of the patients, respectively. Being MSM and having had another STI in the last year were significantly associated with macrolide-resistant MG infection, while no associations were found with resistance to fluoroquinolones.

Conclusions: Testing for resistance to first-line and second-line drugs against MG should be recommended for the general population and mandatory for the MSM population. We suggest that empiric azithromycin use for STI management should be avoided.

Keywords: M. genitalium; antimicrobial resistance; risk factors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Anti-Bacterial Agents / therapeutic use*
  • Azithromycin / therapeutic use*
  • DNA Topoisomerase IV
  • Drug Resistance, Bacterial / genetics*
  • Female
  • Fluoroquinolones / therapeutic use*
  • Heterosexuality
  • Homosexuality, Male
  • Humans
  • Macrolides / therapeutic use*
  • Male
  • Moxifloxacin / therapeutic use*
  • Mutation
  • Mycoplasma genitalium / drug effects*
  • RNA, Ribosomal, 23S
  • Sequence Analysis, DNA
  • Spain / epidemiology
  • Young Adult

Substances

  • Anti-Bacterial Agents
  • Fluoroquinolones
  • Macrolides
  • RNA, Ribosomal, 23S
  • Azithromycin
  • DNA Topoisomerase IV
  • Moxifloxacin