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P4.93 Are rectal douching and sharing douching equipment associated with anorectal chlamydia and gonorrhoea? a cross-sectional study among men who have sex with men
  1. Roel Achterbergh1,
  2. JJ Van Der Helm2,
  3. W Van Den Boom1,
  4. T Heijman1,
  5. IG Stolte1,
  6. MS Van Rooijen1,
  7. HJC De Vries3
  1. 1Public Health Serice Amsterdam, Amsterdam, The Netherlands
  2. 2Centre for Environmental Safety and Security, National Institute of Public Health and the Environment, Bilthoven, The Netherlands
  3. 3Department of Dermatology, Academic Medical Centre, Amsterdam, The Netherlands

Abstract

Introduction Men who have sex with men (MSM) are at high risk for anorectal chlamydia and gonorrhoea infections. Many MSM use rectal douches in preparation for sex, which might break down the mucosal barrier function and facilitate the acquisition of sexually transmitted infections (STI). We determined whether rectal douching or sharing douching equipment was associated with anorectal chlamydia and gonorrhoea.

Methods In a cross-sectional study among 994 MSM attending the STI outpatient clinic of Amsterdam between February and April 2011, data was collected on rectal douching, sexual behaviour, and STI. We used multivariable logistic regression analysis to determine the association between rectal douching, including sharing of douching equipment, and anorectal chlamydia and gonorrhoea for those at risk. We adjusted for other risk behaviour, i.e., condom use, number of partners, and HIV status.

Results Of 994 MSM, 46% (n=460) practised rectal douching, of whom 25% (n=117) shared douching equipment. Median age was 39 years [interquartile range (IQR), 30–47], median number of sex partners in the six months prior to consult was five [IQR 3–10] and 289 (29.0%) participants were HIV-positive. The prevalence of anorectal chlamydia and/or gonorrhoea for those at risk was 9.6% (n=96). In multivariable analysis, HIV positivity (aOR=2.2, 95%CI=1.3–3.6), younger age (aOR=2.5, CI=1.4–4.5 for those <35 years compared to ≥45 years), and more sexual partners (aOR=1.2; 95%CI=1.0–1.5 for 1 log increase) were significantly associated with anorectal STI. However, rectal douching or sharing douching equipment were not significantly associated with anorectal chlamydia and/or gonorrhoea (p=0.726).

Conclusion Almost half of MSM used rectal douching and a quarter of these shared douching equipment. Though using douching equipment does not appear to contribute to anorectal chlamydia and gonorrhoea, STI prevalence remains high and prevention strategies like early testing and treatment remain of utmost importance.

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