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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Effect of nonoxynol-9 gel on urogenital gonorrhea and chlamydial infection: a randomized controlled trial.

CONTEXT: Nonoxynol-9 has been suggested as a vaginal microbicide to protect against common sexually transmitted infections. OBJECTIVE: To compare nonoxynol-9 gel and condom use (gel group) vs condom use alone (condom group) for the prevention of male-to-female transmission of urogenital gonococcal and chlamydial infection. DESIGN AND SETTING: Randomized controlled trial conducted at 10 community clinics and 10 pharmacies in Yaoundé, Cameroon, between October 1998 and September 2000, with 6 months of follow-up. PARTICIPANTS: High-risk population of 1251 women (excluding sex workers) being treated for or who had symptoms of sexually transmitted infections. Three were excluded from the gel group (0.5%) and 7 from the condom group (1%) because of no follow-up data. INTERVENTIONS: Nonoxynol-9 gel (100 mg) and condoms or condoms only. MAIN OUTCOME MEASURE: A positive test result for gonococcal or chlamydial infection by the ligase chain reaction assay; secondary outcome measure was a positive test result for human immunodeficiency virus (HIV). RESULTS: The rate ratio (RR) for new urogenital infections was 1.2 for the gel group vs condom group (95% confidence interval [CI], 0.9-1.6; P =.21). The gel group had 116 diagnosed gonococcal infections, chlamydial infections, or both for a rate of 43.6 per 100 person-years, and the condom group had 100 infections for a rate of 36.6 per 100 person-years. The RR for gonococcal infection in the gel group vs the condom group was 1.5 (95% CI, 1.0-2.3) and for chlamydial infection was 1.0 (95% CI, 0.7-1.4). There were 5 new cases of HIV infections in the gel group and 4 in the condom group. Three women in each group became pregnant during the study. CONCLUSION: Nonoxynol-9 gel did not protect against urogenital gonococcal or chlamydial infection.[1]

References

  1. Effect of nonoxynol-9 gel on urogenital gonorrhea and chlamydial infection: a randomized controlled trial. Roddy, R.E., Zekeng, L., Ryan, K.A., Tamoufé, U., Tweedy, K.G. JAMA (2002) [Pubmed]
 
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