Prevalence and risk factors for Chlamydia trachomatis infection among cross-border truck drivers in Hong Kong

Objectives: To determine the prevalence and risk factors for chlamydial infection in cross-border truck drivers. Methods: 225 Hong Kong-based cross-border truck drivers were screened for chlamydial infection. Associations between infection and potential risk factors were determined by questionnaire. Results: 8.5% of drivers were positive for chlamydial infection. Of 62% of drivers reporting recent sex with commercial sex workers (CSW), 39% had not used condoms. 75% of drivers with extramarital sex partners (ESP) also frequented CSW and 47% of this group had not used condoms with CSW. 43.3% PCR-positive cases reported symptoms. No risk factor was associated with chlamydial infection after adjustment, although ''had sex with ESP'' approached significance. Conclusions: The prevalence of chlamydial infection among cross-border truck drivers was not strikingly high, although drivers engaged in sex with both ESP and CSW, with many admitting unprotected intercourse. The findings highlight the importance of promoting safe sex to truck drivers.