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, Vol:33, ISSN:0954-0121, Pages:1577-1594

Chang A, Maswera R, Moorhouse L, et al., 2021, The determinants and impacts of age-disparate relationships on women in Zimbabwe: A life course perspective, Social Science and Medicine – Population Health, Vol:16, ISSN:2352-8273, Pages:1-9

Tlhajoane M, Dzamatira F, Kadzura N, et al., 2021, Incidence and predictors of attrition among patients receiving ART in eastern Zimbabwe before, and after the introduction of universal ‘treat-all’ policies: A competing risk analysis, Plos Global Public Health, Vol:1, Pages:1-15


Stapley J, Davis K, Dadirai T, et al., Impact of community-level ART coverage on HIV-related stigmatising attitude within a general population cohort in Manicaland, east Zimbabwe; a longitudinal study, 12th Annual International Conference on Stigma

Davis K, Moorhouse L, Maswera R, et al., Associations between HIV status and hypertension status in a high HIV prevalence population in Manicaland: a cross-sectional study of adults, 23rd International Workshop on Long-term Complications of HIV and SARS-CoV-2, SAGE Publications, ISSN:1359-6535

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