International travel as risk factor for Chlamydia trachomatis infections among young heterosexuals attending a sexual health clinic in Melbourne, Australia, 2007 to 2017

摘要

BackgroundInternational travel is considered a risk factor for acquiring Chlamydia trachomatis; however, there are little empirical data to support this.AimTo examine the prevalence and risk factors for Chlamydia trachomatis infections among heterosexual international travellers (n?=?28,786) attending the Melbourne Sexual Health Centre (MSHC), Australia, compared to Australian residents (n?=?20,614).MethodsWe conducted a repeated cross-sectional study and analysed sexual behaviours and chlamydia positivity among heterosexual males and females aged?≤?30 attending MSHC for the first time between January 2007 and February 2017. ‘Travellers’ were defined as individuals born outside of Australia who had resided in the country?C.trachomatis infections, respectively. Chlamydia in males and females was associated with younger age?(≤?25), inconsistent condom use, a higher number of sexual partners (≥?4 partners) and being a traveller (p?