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https://hdl.handle.net/10216/114665
Author(s): | Meireles, P Lucas, R Carvalho, AC Fuertes, R Brito, J Campos, MJ Mendão, L Barros, H |
Title: | Incident risk factors as predictors of HIV seroconversion in the Lisbon cohort of men who have sex with men: first results, 2011-2014 |
Issue Date: | 2015 |
Abstract: | HIV incidence in men who have sex with men (MSM) is increasing in western countries, including Portugal. We aimed to estimate HIV incidence and to assess how individual short-term changes in exposures over time predict seroconversion. We evaluated participants of an open cohort of HIV-negative MSM enrolled after testing at a community-based voluntary HIV counselling and testing centre in Lisbon. At each evaluation a structured questionnaire was completed and HIV status was ascertained using rapid followed by confirmatory testing. Between April 2011 and February 2014, 804 MSM were followed for a total of 893 person-years. Predictors of HIV seroconversion were identified using Poisson generalised linear regression. The overall seroincidence was 2.80/100 person-years (95% confidence interval: 1.89–4.14). Men who seroconverted had a higher mean number of tests per year. Seroconversions were significantly associated with partner disclosure of HIV status during follow-up, newly-adopted unprotected anal intercourse (UAI) with a steady partner and being newly-diagnosed with syphilis during follow-up. Likewise, sexual intercourse with HIV-positive men, having an HIV-positive steady partner at least once during follow-up and persistent UAI with occasional partners were predictors of seroconversion. High HIV incidence in this cohort is likely driven by short-term contextual and behavioural changes during follow-up. |
Subject: | HIV seroconversion Men who have sex with men |
URI: | http://hdl.handle.net/10216/114665 |
Source: | Euro Surveill, vol. 20(14), p. 45-56 |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | openAccess |
Appears in Collections: | ISPUP - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
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MeirelesPLucasRCarvalho2015.pdf | 291.99 kB | Adobe PDF | View/Open |
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