Sigma Research
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Sigma Research is a research group specialising in the social, behavioural and policy aspects of HIV and sexual health. It is part of the Faculty of Public Health and Policy at the London School of Hygiene & Tropical Medicine.

Homophobia and MSM health across Europe

Homophobia and MSM health across Europe

EMIS data just published shows that Country-level stigma may have historically limited HIV transmission opportunities among MSM, but by restricting MSM's public visibility, it also reduces their ability to access HIV-preventive services, knowledge and precautionary behaviours.


Being Negative

Being Negative

This qualitative study is recruiting London residents NOW. It explores what it means to be HIV negative for gay men and other MSM.

HPE monitoring of Local Delivery

HPE monitoring of Local Delivery

Summary of monitoring data from Local Delivery Partners working as part of HIV Prevention England during 2014-15.

African Health & Sex Survey

African Health & Sex Survey

Available now in print or PDF, our final report from the African Health & Sex Survey of 1,000 African people in England.

Chemsex in south London

Chemsex in south London

Our Chemsex in South London final report and executive summary available here for download.


Access to treatment among European MSM with diagnosed HIV

We have just published in PLoS One the reasons for not taking anti-retroviral treatment (ART) from EMIS, our large Pan-European Internet survey which included 13,353 MSM with diagnosed HIV living in more than 30 countries. A quarter (25.4%) had never received ART, but a small proportion (2.1%) had started and since stopped taking ART. Perceived lack of need was by far the most common reason for not taking or stopping ART (mentioned by 88.8%), followed by fear of consequences (11.7%), and ART inaccessibility (2.3%). For all reasons, an East-West gradient could be seen, with larger proportions of men living in Central and Eastern Europe reporting reasons other than medical advice for not taking ART. A minority were reluctant to start ART independent of medical advice and this was associated with experiences of discrimination in health care. ART is widely available for MSM diagnosed with HIV across Europe and not being on treatment is predominantly due to treatment not being recommended by their physician and/or not perceived to be needed by the respondent.