Author:
Lociciro Stéphanie,Jeannin André,Dubois-Arber Françoise
Abstract
Abstract
Background
Serosorting is practiced by men who have sex with men (MSM) to reduce human immunodeficiency virus (HIV) transmission. This study evaluates the prevalence of serosorting with casual partners, and analyses the characteristics and estimated numbers of serosorters in Switzerland 2007-2009.
Methods
Data were extracted from cross-sectional surveys conducted in 2007 and 2009 among self-selected MSM recruited online, through gay newspapers, and through gay organizations. Nested models were fitted to ascertain the appropriateness of pooling the datasets. Multiple logistic regression analysis was performed on pooled data to determine the association between serosorting and demographic, lifestyle-related, and health-related factors. Extrapolations were performed by applying proportions of various types of serosorters to Swiss population data collected in 2007.
Results
A significant and stable number of MSM (approximately 39% in 2007 and 2009) intentionally engage in serosorting with casual partners in Switzerland. Variables significantly associated with serosorting were: gay organization membership (aOR = 1.67), frequent internet use for sexual encounters (aOR = 1.71), having had a sexually transmitted infection (STI) at any time in the past 12 months (aOR = 1.70), HIV-positive status (aOR = 0.52), regularly frequenting sex-on-premises venues (aOR = 0.42), and unprotected anal intercourse (UAI) with partners of different or unknown HIV status in the past 12 months (aOR = 0.22). Approximately one-fifth of serosorters declared HIV negativity without being tested in the past 12 months; 15.8% reported not knowing their own HIV status.
Conclusion
The particular risk profile of serosorters having UAI with casual partners (multiple partners, STI history, and inadequate testing frequency) requires specific preventive interventions tailored to HIV status.
Publisher
Springer Science and Business Media LLC
Subject
Public Health, Environmental and Occupational Health
Reference31 articles.
1. Joint United Nations Programme on HIV/AIDS (UNAIDS): Global report: UNAIDS report on the global AIDS epidemic 2010. 2010
2. Office féderal de la santé publique (OFSP): VIH/sida en Suisse: données au 31 décembre 2010. Bulletin de l’Office Fédéral de la Santé Publique. 2011, 6/11: 103-105.
3. Sullivan PS, Hamouda O, Delpech V, Geduld JE, Prejean J, Semaille C, Kaldor J, Folch C, Op de Coul E, Marcus U, et al: Reemergence of the HIV epidemic among men who have sex with men in North America, Western Europe, and Australia, 1996-2005. Ann Epidemiol. 2009, 19 (6): 423-431. 10.1016/j.annepidem.2009.03.004.
4. Lociciro S, Jeannin A, Dubois-Arber F: Les comportements face au VIH/SIDA des hommes qui ont des relations sexuelles avec des hommes: résultats de Gaysurvey 2009. 2010, Lausanne: Institut universitaire de médecine sociale et préventive, Raisons de santé 163
5. Hart GJ, Elford J: Sexual risk behaviour of men who have sex with men: emerging patterns and new challenges. Curr Opin Infect Dis. 2010, 23: 39-44. 10.1097/QCO.0b013e328334feb1.
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