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?




Goodwin T, Gregson S, Maswera R, et al., 2021, Understanding the determinants and consequences of HIV status disclosure in Manicaland, Zimbabwe: cross-sectional and prospective analyses, Aids Care: Psychological and Socio-medical Aspects of Aids-hiv, ISSN:0954-0121

Gregson S, Nyamukapa C, 2020, Did sexual behaviour differences between HIV infection and treatment groups offset the biological preventative effects of ART roll-out in Zimbabwe?, Population Studies: a Journal of Demography, ISSN:0032-4728

Skovdal M, Maswera R, Kadzura N, et al., 2020, Parental obligations, care and HIV treatment: How care for others motivates self-care in Zimbabwe, Journal of Health Psychology, Vol:25, ISSN:1359-1053, Pages:2178-2187

Schafer R, Thomas R, Robertson L, et al., 2020, 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, Vol:20, ISSN:1471-2458


Davis K, Guzman PP, Gregson S, et al., 2020, Comparing the prevalence of hypertension by HIV status in sub-Saharan African adults: a systematic review and meta-analyses of cross-sectional studies, JOHN WILEY & SONS LTD, Pages:70-70

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