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.

Chemsex among gay men in south London

Chemsex among gay men in south London

The first two journal articles from our qualitative project on chemsex in South London were published in July. Click here for all the project outputs including two podcasts about the findings.


Views on HIV criminalisation

Views on HIV criminalisation

New qualitative article on how perceptions of criminal HIV prosecutions affect the provision of HIV services.

Gay men, sex, love and risk

Gay men, sex, love and risk

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

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.


Homophobia and health among MSM across Europe

A new open access paper using the pan-European EMIS data shows that country-level stigma may have limited HIV transmission among MSM, but by restricting MSM public visibility, it also reduces their ability to access HIV-prevention services. The findings suggest that MSM in European countries with high levels of homophobia remain vulnerable to HIV infection. Although they have less opportunity to identify as gay or bisexual and contact other MSM, this might change with app-driven contact technologies.


Partner projects

Making it Count
KWP in practice
HAUS Study of HIV self-sampling