Neisseria gonorrhoeae, the bacterium causing gonorrhea, is increasingly resistant to azithromycin, a common antibiotic. To understand this resistance, we analyzed 34 isolates from a Swiss university hospital over three years, focusing on eight genes linked to resistance.
Key Findings:
- Identified critical mutations, including:
- C2597T in the rrl gene (medium-level resistance).
- Mutations in the mtrR promoter (enhance efflux pump activity, reducing antibiotic efficacy).
- Mutations in the rplD gene (contribute to resistance).
- Resistance arises from combinations of mutations, collectively increasing the bacterium’s minimum inhibitory concentration (MIC) for azithromycin.
This study highlights the multifaceted nature of azithromycin resistance and underscores the need for ongoing surveillance, innovative treatments, and public health interventions to combat drug-resistant gonorrhea.
For more information, see the published paper.
