[Recent HIV infection and associated factors among men who have sex with men in Jiangsu province].

To understand the incidence of HIV infections and associated factors among men who have sex with men (MSM) in Jiangsu province. Based on national AIDS sentinel surveillance in 2019, MSM from 13 cities in Jiangsu were recruited for questionnaire interview and laboratory testing during April to July, 2019. Seropositive samples were tested with Limiting-antigen avidity enzyme immunoassay to detect recent HIV infections. The incidence of HIV infection in MSM were calculated according to the formula and parameters from China CDC. Multivariable logistic regression analysis was used to identify factors associated with recent infection of HIV. A total of 4 469 MSM were subjects and the incidence of HIV infection were 4.5% (95%: 3.4%-5.5%).Multivariate logistic regression analysis results showed that compared with these aged ≥40 years, recruitment ways from MSM venues, awareness of AIDS knowledge, non-unprotected anal sex in the past 6 months and non-syphilis infection, those who aged 18-24 years (a=2.083,95%:1.087-3.990), recruitment ways from VCT clinics (a=2.125,95%:1.175-3.843), unawareness of AIDS knowledge (a=2.456,95%:1.109-5.437), unprotected anal sex in the past 6 months (a=3.553,95%:2.143-5.889) and syphilis infection (a=2.414,95%:1.033-5.462) were higher risk of HIV infection. The new infection rates of HIV were high in MSM in Jiangsu province. Health education, condom use and HIV/syphilis screening promotions should therefore be top priority in the prevention and control of HIV infection in MSM.