Prevalence of chlamydial infection and frequency of risk behaviours for STDs and HIV infection among adolescents in public juvenile facilities in the province of Quebec

This study aimed to determine the prevalence of chlamydial infection in adolescents entering public juvenile facilities in the province of Quebec and the frequency of their risk behaviours for STDs and HIV infection. Adolescents were asked to complete an anonymous self-administered questionnaire and to be screened for Chlamydia trachomatis. Of 731 sexually active adolescents, 62% agreed to he tested. The overall prevalence rare was 7.7% (95% confidence interval: 5.1% - 10.3%). The prevalence was significantly higher in Female than in male teenagers: 12% vs 3% (p < 0.001, Fisher's exact test). These results suggest that screening for chlamydial infection should be offered to all sexually active female teenagers admitted into juvenile facilities. For males, selective screening taking into account sexual history would be a more realistic approach. The frequency of high risk activities for ;STDs and HIV infection points to the. importance of specific prevention programs for this population.