Bibliographic Details
| Summary: | 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. |
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| Main Authors: | Meireles, P |
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| Other Authors: | Lucas, R; Carvalho, AC; Fuertes, R; Brito, J; Campos, MJ; Mendão, L; Barros, H |
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| Subject: | HIV seroconversion Men who have sex with men |
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| Year: | 2015 |
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| Country: | Portugal |
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| Document type: | article |
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| Access type: | open access |
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| Associated institution: | Universidade do Porto |
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| Language: | English |
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| Origin: | Repositório Aberto da Universidade do Porto |
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