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  • Title: Geosocial networking mobile applications use and HIV and other sexually transmitted infections among men who have sex with men in Southern China: A cross-sectional study.
    Author: Guo Z, Feng A, Zhou Y, Gao Y, Sun Y, Chen Y, Zhou X, Zou H.
    Journal: Front Public Health; 2023; 11():1063993. PubMed ID: 36844866.
    Abstract:
    INTRODUCTION: Men who have sex with men (MSM) are increasingly using geosocial networking (GSN) mobile applications (apps) to socialize in the community. Our study aimed to compare sexual behaviors between app-using MSM (app users) and non-app-using MSM (non-app users), and evaluate the association between app use and sexually transmitted infections (STIs). METHODS: Eligible MSM were recruited from January to August 2017 in three metropolitan cities: Guangzhou, Shenzhen and Wuxi. A self-completed tablet-based questionnaire was collected about socio-demographic characteristics, sexual behaviors and app use. Blood samples were collected to test for HIV and syphilis. Rectal swabs taken by nurses and urine samples taken by participants themselves were collected to test for gonorrhea and chlamydia. Anogenital warts were checked by a clinician. Chi square tests and logistic regression were used to compare the prevalence of STIs and the characteristics between app users and non-app users. RESULTS: A total of 572 MSM were included in our analysis, 59.9, 25.7, and 23.4% MSM were recruited from Guangzhou, Shenzhen, and Wuxi, respectively. The majority of participants were 20-29 years old (61.7%). 89.0% of MSM had ever used at least one GSN app, and 63.8% MSM had anal intercourse (AI) partners found via apps. Among app users, 62.7% spent <30 min on apps per day on average in the past 6 months. Compared with non-app users, app users were more likely to have an education level of college and above [adjusted OR (AOR) 3.36, 95% confidence interval (CI) 1.65-7.03], have regular sex partners (2.40, 1.16-5.19), have two or more casual sex partners (2-5: 2.90, 1.21-6.90; ≥6: 13.91, 3.13-82.90), have condomless anal intercourse (CAI) with casual sex partners in the past 6 months (2.50, 1.28-5.04), do not know their last sex partners' HIV status (2.16, 1.13-4.21), have tested for HIV in the past year (2.09, 1.07-4.09) and be circumcised (4.07, 1.29-18.42). Prevalence of HIV (8.3 vs. 7.9%, P = 0.93), syphilis (6.9 vs. 11.1%, P = 0.34), gonorrhea (5.1 vs. 6.3%, P = 0.90), chlamydia (18.5 vs. 12.7%, P = 0.36), and anogenital warts (4.9 vs. 4.8%, P = 1.00) were similar between app users and non-app users. CONCLUSIONS: GSN app users were more likely to have high-risk sexual behaviors, but the prevalence of HIV and other STIs were similar to non-app users. Longitudinal studies comparing the incidence of HIV/STIs between long-term app users and non-app users may be necessary to clarify the impact of app use on HIV/STIs risk.
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