Broadly, I am interested in the design of behavioural and social interventions addressing HIV and STI-related risk and service use and the evaluation of their economic and health effects. My recent research has focused on approaches to increase uptake of HIV testing and treatment using methods such as discrete choice experiments, impact evaluation including randomised trials, and cost/cost-effectiveness analysis.

I recently worked on the HIV Self-Testing Africa (STAR) project, where I was based in Malawi and led randomised trials and economic studies of HIV self-testing interventions. My current projects include behavioural studies, including discrete choice experiments, of long-acting HIV prevention technologies in Kenya and Uganda (UPTAKE), and economic evaluation of a community HIV and STI programme in Zimbabwe (CHIEDZA).