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Organon Laboratories Award - Oral Presentation Award: Screening for genital Chlamydia trachomatis in teenagers attending a family planning youth clinic: A prevalence study using a strand displacement assay on urine samples
  1. Aisling Baird, MRCOG, DFFP, Career Grade Trainee in Family Planning and Reproductive Health Care1,
  2. Tana Green, MRCP, Specialist Registrar in GUM2,
  3. Helen King, MFFP, Consultant in Family Planning and Reproductive Health Care3,
  4. George Kinghorn, FRCP, Consultant in GUM4 and
  5. Goura Kudesia, FRCPath, Consultant Virologist5
  1. Central Health Clinic, Sheffield, UK
  2. Department of Genitourinary Medicine, Royal Hallamshire Hospital, Sheffield, UK
  3. Central Health Clinic, Sheffield, UK
  4. Department of Genitourinary Medicine, Royal Hallamshire Hospital, Sheffield, UK
  5. Sheffield Virology Services, Sheffield Teaching Hospital Trust, Northern General Hospital, Sheffield, UK
  1. Correspondence Dr Aisling Baird, Central Health Clinic, 1 Mulberry Street, Sheffield S1 2PJ, UK. E-mail: aislingbaird{at}email.com

Abstract

Background Chlamydia trachomatis is the most common bacterial sexually transmitted infection. Rates are highest in the 16-24-year-old age group. Untreated it can be a significant cause of morbidity. At least 50% of men and 70% of women with C. trachomatis are asymptomatic.

The aims of the study were:

  • To determine the prevalence of C. trachomatis.

  • To determine the success of our referral policy to genitourinary medicine (GU clinic).

  • To determine the characteristics of the population with C. trachomatis.

  • To estimate the level of recognition of 'chlamydia' as a concept.

Participants Attendees at our youth clinic between October 2001 and March 2002.

Method Ethical approval was obtained for this ongoing study. All attendees who were sexually active were asked to participate. An information leaflet was provided. Those who agreed to participate answered a questionnaire, which included a number of lifestyle questions, and provided a urine sample for C. trachomatis testing using a strand displacement assay. Positive results were forwarded to the GU clinic, which provided antibiotic therapy, contact tracing and follow-up.

Results The ongoing study has yielded 616 results with 73 positive (11.9%). To date 66 individuals (90%) have attended the GU clinic and 41 (50%) of the possible 82 partners have responded to contact tracing.

Conclusions Initial results show a high prevalence of C. trachomatis. There is a low condom usage despite a reasonable level of awareness of 'chlamydia'. Contact tracing has not been as successful as anticipated. When the study is complete, various service provision questions will need to be answered, such as the ability to treat the disease in a dedicated youth clinic, making urine testing for C. trachomatis by strand displacement assay (SDA) more widespread, the problem of follow-up, screening for associated sexually transmitted infections (STIs) and contact tracing in a relatively less mobile and less empowered population.

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