Imperial College London


Faculty of MedicineSchool of Public Health

Professor in Demography and Behavioural Science



+44 (0)20 7594 3279s.gregson




LG27Praed StreetSt Mary's Campus





Simon Gregson is a demographer working on the dynamics of spread, impact and control of HIV epidemics in sub-Saharan Africa. His work combines empirical studies including large-scale, longitudinal, population-based and clinical surveys with use of mathematical models. Simon is Director of the Manicaland HIV/STD Prevention Project in Zimbabwe.

Video (below)

Why did HIV decline in Zimbabwe?

The unique, population-based Manicaland study tracks the Zimbabwean HIV epidemic over 19 years. Professor Simon Gregson delivers his inaugural lecture. Recorded at Imperial College London on 08 Jun 2011.

Why did HIV decline in Zimbabwe?




Schafer R, Thomas R, Robertson L, et al., Spillover HIV prevention effects of a cash transfer trial in East Zimbabwe: Evidence from a cluster-randomised trial and general-population survey, Bmc Public Health, ISSN:1471-2458

Skovdal M, Pickles MR, Hallett TB, et al., 2020, Complexities to consider when communicating risk of COVID-19, Public Health, Vol:186, ISSN:0033-3506, Pages:283-285

Skovdal M, Beckmann N, Maswera R, et al., 2020, Uncertainties, work conditions and testing biases: Potential pathways to misdiagnosis in point-of-care rapid HIV testing in Zimbabwe, Plos One, Vol:15, ISSN:1932-6203, Pages:1-17

Marston M, Gregson S, 2020, HIV, ART and fertility in sub-Saharan Africa: pieces still missing in the jigsaw puzzle, Journal of Infectious Diseases, Vol:221, ISSN:0022-1899, Pages:1919-1921

Hargreaves JR, Auerbach JD, Hensen B, et al., 2020, Strengthening primary HIV prevention: better use of data to improve programmes, develop strategies and evaluate progress, Journal of the International Aids Society, Vol:23, ISSN:1758-2652, Pages:1-3

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