摘要Background::Human immunodeficiency virus (HIV) prevalence among student men who have sex with men (MSM) in college is more than 5.0% and keeps on increasing in China. This study aims to clarify the proportion of HIV recent infection, its propeller and the source among college student MSM.Methods::We conducted a multicenter cross-sectional study in seven major Chinese cities during 2012-2013. HIV recent infections (≤168 days) and incidence was measured and estimated by BED HIV-1 capture enzyme immunoassay (BED-CEIA) testing strategy. HIV-related behaviors and transmitted drug resistance (TDR) were investigated and compared between the college student MSM, < 25-year-old non-student youth MSM (NSYM), and ≥25-year-old non-student non-youth MSM (NSNYM), using structured survey, and analyses of drug resistance.Results::Overall, 4496 (4496/4526, 99.3%) were eligible for enrollment, comprising 565 college student MSM, 1094 NSYM, and 2837 NSNYM. The proportion of HIV recent infection were 70.3% (26/37), 50.8% (65/128) and 35.1% (95/271), the HIV incidence rate were 10.0 (95% CI: 6.2-13.9)/100 person-year (PY), 12.9 (95% CI: 9.8-16.1 )/100PY, 6.8 (95% CI: 5.4-8.2)/100 PY, and TDR prevalences were 7.4% (2/27), 2.0%, (2/98) and 4.9% (11/226), among student MSM, NSYM, and NSNYM, respectively. Among HIV positive student MSM with age <21 years, the proportion of HIV recent infection is 90.9% (10/11). Factors independently associated with HIV recent infection in student MSM was usage of recreational drug in the past 6 months (adjusted odds ratio [aOR]: 2.5; 95% CI: 1.0-5.8).Conclusions::College student MSM had higher proportion of HIV recent infection and TDR than the youth and older MSM in China during 2012-2013. The HIV infections were more likely to happen during the early year of college life among student MSM.

abstractsBackground::Human immunodeficiency virus (HIV) prevalence among student men who have sex with men (MSM) in college is more than 5.0% and keeps on increasing in China. This study aims to clarify the proportion of HIV recent infection, its propeller and the source among college student MSM.Methods::We conducted a multicenter cross-sectional study in seven major Chinese cities during 2012-2013. HIV recent infections (≤168 days) and incidence was measured and estimated by BED HIV-1 capture enzyme immunoassay (BED-CEIA) testing strategy. HIV-related behaviors and transmitted drug resistance (TDR) were investigated and compared between the college student MSM, < 25-year-old non-student youth MSM (NSYM), and ≥25-year-old non-student non-youth MSM (NSNYM), using structured survey, and analyses of drug resistance.Results::Overall, 4496 (4496/4526, 99.3%) were eligible for enrollment, comprising 565 college student MSM, 1094 NSYM, and 2837 NSNYM. The proportion of HIV recent infection were 70.3% (26/37), 50.8% (65/128) and 35.1% (95/271), the HIV incidence rate were 10.0 (95% CI: 6.2-13.9)/100 person-year (PY), 12.9 (95% CI: 9.8-16.1 )/100PY, 6.8 (95% CI: 5.4-8.2)/100 PY, and TDR prevalences were 7.4% (2/27), 2.0%, (2/98) and 4.9% (11/226), among student MSM, NSYM, and NSNYM, respectively. Among HIV positive student MSM with age <21 years, the proportion of HIV recent infection is 90.9% (10/11). Factors independently associated with HIV recent infection in student MSM was usage of recreational drug in the past 6 months (adjusted odds ratio [aOR]: 2.5; 95% CI: 1.0-5.8).Conclusions::College student MSM had higher proportion of HIV recent infection and TDR than the youth and older MSM in China during 2012-2013. The HIV infections were more likely to happen during the early year of college life among student MSM.