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However, it is difficult to accurately and widely estimate HIV incidence using the prospective cohort study method or the mathematical modelling method.The prospective cohort study method is time-consuming, expensive, and potentially biased.However, HIV incidence throughout the province is still unknown.Estimating HIV incidence is important to understand the current status of transmission dynamics, identify high-risk populations, monitor prevention efforts, and target resources at programs that are most effective in reducing transmissions [10].A total of 2433, 2678, 2591, 26 participants were enrolled in 2011, 2012, 2013, 20, respectively.HIV incidence increased from 5.10% in 2011 to 6.62% in 2015 (p = 0.025).Epidemics of HIV among men who have sex with men (MSM) are major public health concerns in most parts of China.This study examined the trends in HIV incidence and associated factors among MSM in Jiangsu Province.

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Staff from local Centers for Disease Control and Prevention (CDC) went to the MSM gathering venues to conduct on-site surveys.Since the first cluster of HIV cases were detected among MSM in a bathhouse in 2006 [7], increasing numbers of HIV positive MSM cases have been detected throughout the province in the past decade. HIV incidence among MSM was 3.36 per 100 person-years in an open cohort study conducted from 2008 to 2010 in Nanjing (the capital city of Jiangsu Province) [8].In two other major cities, baseline HIV prevalence was 16.0% and 13.6%, respectively, with observed HIV incidence of 13.59 and 12.62 per 100 person-years [9].MSM who had an education level of junior high school or less (a OR = 1.472, p = 0.018), engaged in condomless anal sex in the past 6 months (a OR = 2.389, p Epidemics of HIV among men who have sex with men (MSM) are major public health concerns in most parts of China.HIV incidence increased from 5.10% in 2011 to 6.62% in 2015 ( = 0.001) were likely to be recently infected with HIV.

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