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?




Davis K, Pickles M, Gregson S, et al., 2023, The effect of universal testing and treatment for HIV on health-related quality of life – an analysis of data from the HPTN 071 (PopART) cluster randomised trial, Ssm: Population Health, Vol:23, ISSN:2352-8273, Pages:1-10

Pickles M, Gregson S, Moorhouse L, et al., 2023, Strengthening the HIV prevention cascade to maximise epidemiological impact in Eastern Zimbabwe: a modelling study, The Lancet Global Health, Vol:11, ISSN:2214-109X, Pages:e1105-e1113

Shamsuddin S, Davis K, Moorhouse L, et al., 2023, Relationship between psychological distress, health behaviours and future reports of hypertension among adults in East Zimbabwe: a cohort study, Open Heart, Vol:10, ISSN:2053-3624, Pages:1-10

Sheppard R, Watson OJ, Pieciak R, et al., 2023, Using mortuary and burial data to place COVID-19 in Lusaka, Zambia within a global context, Nature Communications, Vol:14, ISSN:2041-1723, Pages:1-15


Davis K, Moorhouse L, Maswera R, et al., 2023, Association between HIV status and payment for hypertension care in Manicaland, East Zimbabwe: a cross-sectional study, AIDSImpact 2023

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