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  • Title: Nonoptimal Vaginal Microbiota After Azithromycin Treatment for Chlamydia trachomatis Infection.
    Author: Tamarelle J, Ma B, Gajer P, Humphrys MS, Terplan M, Mark KS, Thiébaut ACM, Forney LJ, Brotman RM, Delarocque-Astagneau E, Bavoil PM, Ravel J.
    Journal: J Infect Dis; 2020 Feb 03; 221(4):627-635. PubMed ID: 31573603.
    Abstract:
    We characterized the composition and structure of the vaginal microbiota in a cohort of 149 women with genital Chlamydia trachomatis infection at baseline who were followed quarterly for 9 months after antibiotic treatment. At time of diagnosis, the vaginal microbiota was dominated by Lactobacillus iners or a diverse array of bacterial vaginosis-associated bacteria including Gardnerella vaginalis. Interestingly, L. iners-dominated communities were most common after azithromycin treatment (1 g monodose), consistent with the observed relative resistance of L. iners to azithromycin. Lactobacillus iners-dominated communities have been associated with increased risk of C. trachomatis infection, suggesting that the impact of antibiotic treatment on the vaginal microbiota could favor reinfections. These results provide support for the dual need to account for the potential perturbing effect(s) of antibiotic treatment on the vaginal microbiota, and to develop strategies to protect and restore optimal vaginal microbiota.
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