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Sigma Research is a social 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.

HIV testing and sexual risk among MSM, 2001-2008.

Published in Sexuality Research and Social Policy this article examines changes in HIV status-specific patterns of unprotected anal intercourse between 2001 and 2008. The data suggest an increase in the proportion of gay and bisexual men with diagnosed HIV and a concentration of sexual risk among them. This may be countering an overall trend towards less sexual risk taking among men not tested HIV positive.
Access the article.
aidsmap story on article.

London HIV Patient Survey
Just released, our final report on the experiences of people with diagnosed HIV using NHS HIV out-patients services across London.

More about the project

Laurie Ann Henderson
It is with great sadness that we note the death of Laurie Henderson, a key staff member of Sigma for very many years. Our thoughts are with Kath, her family and all her many friends.Obituary

Biomedical HIV prevention
Learn about our workshop where 40 medical sociologists considered how new HIV prevention technologies might affect HIV prevention research.

Access videos of workshop

Criminalisation study reports
Summary reports and videos from the launch event of a new qualitative study of provider perspectives on HIV and the criminal law.

Access reports and launch videos.

Plus One serodiscordant study
Summary reports from Plus One, our qualitative study of the lives of African people in England, who are in HIV serodiscordant relationships.

More about Plus One

Sigma Panel Insight Blasts 1-9
Find here all nine of our short Insight Blasts providing feedback from the monthly online Sigma Panel study of gay men, bisexual men and other MSM.

More about Sigma Panel