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Mycoplasma genitalium in asymptomatic patients – implications for screening
  1. Jonathan Ross (jonathan.ross{at}hobtpct.nhs.uk)
  1. Whittall Street Clinic, United Kingdom
    1. Louise Brown (louise.brown{at}hobtpct.nhs.uk)
    1. HOB tPCT NHS, United Kingdom
      1. Pamela Saunders (pamela.saunders{at}hpa.org.uk)
      1. Health Protection Agency, United Kingdom
        1. sarah alexander (sarah.alexander{at}hpa.org.uk)
        1. Health Protection Agency, United Kingdom

          Abstract

          Objectives: Mycoplasma genitalium is well established as a cause of urethritis, and has also been associated with cervicitis, endometritis and pelvic infection. Low rates of infection suggest screening may be inappropriate in the general population but it remains unclear whether asymptomatic patients attending a sexual health clinic should be tested routinely. The objective of this study was to measure the positivity rate of M. genitalium infection in asymptomatic individuals presenting to a sexual health clinic to inform the need for screening in this population.

          Methods: Asymptomatic patients were identified using a structured questionnaire and tested for M. genitalium from genital swabs or urine using two separate polymerase chain reaction (PCR) assays incorporating different primer sequences.

          Results: 1304 patients were approached over a 6 month period. 743 (57%) patients were symptomatic and 168 (13%) refused consent leaving 394 (30%) patients who entered the study. Residual samples were available for 308 (79%) patients, 168 (54%) men and 140 (46%) women. 14/308 (4.5%, 95% CI 2.2%-6.9%) asymptomatic patients were infected with M. genitalium, and an additional 2 (0.6%, 95% CI 0.2%-2.3%) patients had discrepant PCR results. No significant associations were found between M. genitalium infection and age, gender, ethnicity or isolation site.

          Conclusion: The positivity rate of M. genitalium infection in asymptomatic sexual health clinic attendees is comparable to that of gonorrhoea or chlamydia and, if evidence of pathogenicity continues to accumulate, a further assessment of the role of routine screening in this setting would be appropriate.

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