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Syphilis cases are concentrated in three men who have sex with men (MSM) population groups in Europe: PrEP (Pre-Exposure Prophylaxis) users, sex workers and people living with HIV In this two-wave web-based survey of European MSM (n=278 256 participants across 31 countries), the proportion of respondents self-reporting a syphilis diagnosis in the previous 12 months rose from 2.3% in 2010 to 4.5% in 2017. In adjusted analyses, factors associated with a syphilis diagnosis comprised STI screening in the previous month versus no screening (adjusted OR (aOR) 25.76), HIV PrEP use (aOR 3.02), living with HIV (aOR 2.67), selling sex (aOR 1.45) and a greater number of non-steady condomless anal intercourse (CAI) partners (aOR 1.01 for each additional partner). The association between PrEP use and a syphilis diagnosis was mediated by a higher likelihood of recent STI screening and a greater number of non-steady CAI partners, both of which increased...
Source: Sexually Transmitted Infections - Category: Sexual Medicine Authors: Tags: Perspectives Source Type: research