[Analysis on HIV infection status and correlated factors in men who have sex with men in young students in Tianjin based on social network peer mobilization testing model].

Objective: To analysis the HIV infection status and correlated factors in men who have sex with men (MSM) in young students in Tianjin based on social network peer mobilization testing model, and provide evidence for the development of AIDS prevention and control strategies for this population. Methods: From January 2020 to December 2024, Tianjin CDC and social organizations collaborated to recruit and train peer volunteers, then MSM in young students aged 16-24 years were mobilized to conduct one-on-one assisted HIV testing through social volunteer networks, and the information about their social demographic characteristics, awareness of knowledge about AIDS prevention and control and related behavioral characteristics were collected and analyzed. Results: A total of 234 peer volunteers were recruited, and 3 240 MSM in young students were mobilized, and 4 461 tests were conducted. The overall HIV infection rate was 1.20% (39/3 240). The HIV infection rates in the MSM from urban, periurban, and rural areas were 0.92% (8/869), 1.51% (24/1 594), and 0.90% (7/777), respectively. The differences in behavioral characteristics of the MSM from different areas were significant (all P<0.05). The results of multivariate logistic regression analysis showed that the positive correlation factor of HIV infection risk among young student MSM was the lack of knowledge about post-exposure prophylaxis (aOR=2.39, 95%CI: 1.21-4.73). The negatively correlated factor was a college degree or above (aOR=0.33, 95%CI: 0.11-0.95). Conclusions: The HIV infection rate in the MSM in young students was relatively low in the survey in Tianjin based on social network peer mobilization testing model, but the HIV infection rate was slightly higher in those from periurban area than in those from other areas. In the future, it is necessary to strengthen the prevention and control of HIV infection in periurban area.