R H T Nijhuis1, R G Duinsbergen2, A Pol3, P C R Godschalk2. 1. Department of Medical Microbiology and Medical Immunology, Meander MC, Amersfoort, The Netherlands. rht.nijhuis@meandermc.nl. 2. Department of Medical Microbiology and Medical Immunology, Meander MC, Amersfoort, The Netherlands. 3. NYtor B.V., Nijmegen, The Netherlands.
Abstract
PURPOSE: In this study, we report the prevalence of Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), Mycoplasma genitalium (MG) and Trichomonas vaginalis (TV) amongst clinical specimens of patients suspected for sexually transmitted infections received at our laboratory and in addition report the prevalence of resistance-associated mutations (RAM) for ciprofloxacin in NG and azithromycin and moxifloxacin in MG. METHODS: All specimens received from December 2018 to May 2019 were tested for the four pathogens. In addition, the presence of RAM associated with resistance to ciprofloxacin in NG and to azithromycin and moxifloxacin in MG was determined by different real-time PCR assays on all NG- and MG-positive specimens. RESULTS: CT was detected most often (267/2613, 10.2%), followed by MG (106/2592, 4.1%), NG (41/2613, 1.6%) and TV (10/2592, 0.4%) amongst all specimens. The prevalence of ciprofloxacin RAM in NG was 21.2%, and the prevalence of RAM in MG was 40.6% for azithromycin and 8.1% for moxifloxacin. Nearly all specimens containing moxifloxacin-resistant MG also contained azithromycin-resistant MG. CONCLUSION: CT is found most often in our population followed by MG and NG. By using molecular assays to detect RAM supplementary to pathogen identification of NG and MG, optimal therapy can be advised.
PURPOSE: In this study, we report the prevalence of Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), Mycoplasma genitalium (MG) and Trichomonas vaginalis (TV) amongst clinical specimens of patients suspected for sexually transmitted infections received at our laboratory and in addition report the prevalence of resistance-associated mutations (RAM) for ciprofloxacin in NG and azithromycin and moxifloxacin in MG. METHODS: All specimens received from December 2018 to May 2019 were tested for the four pathogens. In addition, the presence of RAM associated with resistance to ciprofloxacin in NG and to azithromycin and moxifloxacin in MG was determined by different real-time PCR assays on all NG- and MG-positive specimens. RESULTS:CT was detected most often (267/2613, 10.2%), followed by MG (106/2592, 4.1%), NG (41/2613, 1.6%) and TV (10/2592, 0.4%) amongst all specimens. The prevalence of ciprofloxacin RAM in NG was 21.2%, and the prevalence of RAM in MG was 40.6% for azithromycin and 8.1% for moxifloxacin. Nearly all specimens containing moxifloxacin-resistant MG also contained azithromycin-resistant MG. CONCLUSION:CT is found most often in our population followed by MG and NG. By using molecular assays to detect RAM supplementary to pathogen identification of NG and MG, optimal therapy can be advised.
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