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• W4240065288 abstract "Abstract Background Sexual transmission among men who have sex with men (MSM) is the dominant route of HIV transmission in China. Extensive use of geosocial networking (GSN) smartphone application (app) have dramatically changed the patterns of sexual behaviors and HIV risk among MSM, but data on HIV incidence and changed risk behaviors of GSN app using MSM are limited. Methods We constructed an open cohort which was constructed and maintained using a GSN app to assess the HIV incidence among app-using MSM, recruited from June 2017 to December 2018. MSM completed an online questionnaire of their sociodemographic characteristics, sexual behaviors, recreational drug use and sexually transmitted infections status. Then each man had an HIV test, and those testing negative were enrolled into the cohort. Participants completed follow-ups with additional HIV tests though the app during the study period, and were censored at HIV seroconversion or study end date. HIV incidence were calculated by dividing the sum of observed HIV seroconversions by the observed person-time. Univariate (Chi-square test and Fisher’s exact test) and multivariate (proportional hazards regression) analyses were used to examine correlates of HIV incidence. Results A total of 6957 HIV negative MSM were enrolled in the open cohort, 37 seroconversions occurred among 1937 men contributing 1065 observed person-years: HIV incidence was 3.47 per 100 person-years (95%CI 2.37–4.57). HIV seroconversion was associated with the following factors in the preceding six months: more than five sexual partners (HR = 2.65 95%CI 1.04–6.67), and sex with HIV positive partners (HR = 3.82 95%CI 1.16–12.64). Consistent condom use for anal sex (HR = 0.27 95%CI 0.07–0.96), and reporting insertive anal sex only (HR = 0.23 95%CI 0.08–0.62) were protective factors for HIV seroconversion. Conclusions Tailored interventions targeting app-using MSM are urgently needed given their high risk of HIV. As a new tool for accessing MSM at higher HIV risk, GSN smartphone app-based interventions could play an important role in HIV control among MSM using combinations of biomedical and behavioral interventions." @default.
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• W4240065288 date "2020-11-18" @default.
• W4240065288 modified "2023-10-17" @default.
• W4240065288 title "HIV Incidence among Men Who Have Sex with Men Using Geosocial Networking Smartphone Application in Beijing, China: an Open Cohort Study" @default.
• W4240065288 doi "https://doi.org/10.21203/rs.3.rs-110379/v1" @default.
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