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Published on: July 6, 2014
Prevalence, clinical features and quantification of genital non-viral infections
C A Carne1, J Gibbs, A Delaney
1Department of Genitourinary Medicine, Clinic 1A, Box 38, Addenbrookes Hospital, Cambridge University Hospitals NHS Trust, UK. christopher.carne@addenbrookes.nhs.uk
Abstract:
We conducted a study of the prevalence, clinical features and microscopy findings, by retrospective case-notes survey, of six non-viral organisms, among 1718 attendees at a genitourinary (GU) medicine clinic in England. An in-house assay for six non-viral infections was used and quantitation of ureaplasmas performed. The prevalences of the six organisms were: Chlamydia trachomatis (CT), 7.1%; Neisseria gonorrhoeae (NG), 0.6%; Mycoplasma genitalium (MG), 1.0%; Trichomonas vaginalis, 0.2%; Ureaplasma urealyticum, 16.1%; Ureaplasma parvum, 35.6%. Among men (but not women) there were significantly raised odds ratios compared with that for U. parvum, for the symptom of discharge with CT, 7.30; MG, 6.43; NG 19.29; dysuria with CT, 5.89 and MG, 5.95; and the microscopy finding of >4 pus cells per high power field with: CT, 7.22; MG, 4.58 and NG 22.31. Evaluation of a possible link between quantitation of U. urealyticum and urethritis did not confirm research findings elsewhere.
Insights
Ureaplasma parvum and Ureaplasma urealyticum are common in genitourinary clinics. Chlamydia trachomatis, Mycoplasma genitalium, and Neisseria gonorrhoeae are associated with specific symptoms in men.
Area of Science:
- Genitourinary Medicine
- Microbiology
- Infectious Diseases
Background:
- Non-viral sexually transmitted infections (STIs) are a significant public health concern.
- Understanding the prevalence and clinical associations of various non-viral organisms is crucial for effective diagnosis and treatment.
- Ureaplasma species are common inhabitants of the urogenital tract, but their clinical significance is not fully understood.
Purpose of the Study:
- To determine the prevalence of six non-viral organisms in attendees of a UK genitourinary medicine clinic.
- To investigate the clinical features and microscopy findings associated with these infections.
- To evaluate the relationship between Ureaplasma urealyticum quantitation and urethritis.
Main Methods:
- Retrospective case-notes survey of 1718 attendees at a genitourinary medicine clinic.
- Utilized an in-house assay for detecting Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), Mycoplasma genitalium (MG), Trichomonas vaginalis, Ureaplasma urealyticum, and Ureaplasma parvum.
- Quantitation of Ureaplasma species was performed.
Main Results:
- Prevalence rates: U. parvum (35.6%), U. urealyticum (16.1%), CT (7.1%), MG (1.0%), NG (0.6%), T. vaginalis (0.2%).
- In men, CT, MG, and NG were significantly associated with discharge and dysuria. CT, MG, and NG were also associated with >4 pus cells/high power field on microscopy.
- No confirmed link between U. urealyticum quantitation and urethritis was found.
Conclusions:
- Ureaplasma species are highly prevalent in this genitourinary clinic population.
- CT, MG, and NG show significant associations with specific symptoms and microscopy findings in men.
- Further research is needed to clarify the role of Ureaplasma urealyticum in urethritis.
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