ArticleBMC infectious diseases2025
The precision of behavioral intervention strategies remain one of the key strategies for HIV prevention among MSM in the era of pharmaceutical interventions: an ecological study.
Article in BMC infectious diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundA series of intervention strategies have been successively implemented to prevent HIV among men who have sex with men (MSM) in Shenzhen. This study aimed to examine HIV yield and assess the impact of different intervention strategies on HIV prevention in Shenzhen.
methodsA serial cross-sectional study was conducted in Shenzhen from 2009 to 2021 among MSM. The temporal trends of HIV yield and HIV risk behaviours were assessed using the Joinpoint Regression model. The effectiveness of the various interventions was evaluated using interrupted time series (ITS) analysis. Multilevel logistic regression was employed to evaluate the changes in the HIV epidemic and HIV risk behaviours across different periods of intervention.
resultsThe overall HIV yield was 9.8% among MSM in Shenzhen from 2009 to 2021. The HIV yield decreased rapidly after the comprehensive implementation of venue-based differentiated behavioural interventions, from 14.74% in 2013 to 10.69% in 2016 (SPC=-3.80%, 95%CI: -7.10 to-0.40). Since the implementation of immediate cART and PEP/PrEP promotion, the HIV yield further decreased from 9.51% in 2017 to 4.08% in 2021 (SPC=-9.50%, 95%CI: -12.80 to -6.20%). The results of the ITS models revealed that, compared with an increase of 0.57% per quarter in HIV yield during the preintervention period, a significant decrease of 0.28% per quarter was observed after the implementation of venue-based differentiated behavioural interventions. During the implementation of immediate combined antiretroviral treatment and pre- and postexposure prophylaxis promotion, the trend of HIV yield did not change significantly. HIV risk behaviours such as unprotected anal intercourse, drug abuse, and having sex with both men and women all showed a downwards trend.
conclusionsThe yield of HIV among MSM in Shenzhen has declined since 2012 and was lower than the national average from 2020. Although this is the era of pharmacological interventions, adherence to precisely tailored behavioural interventions for controlling HIV yield in MSM has continued to yield significant benefits.
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