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?




Schaefer R, Gregson S, Takaruza A, et al., Spatial patterns of HIV prevalence and Service Use in East Zimbabwe: implications for future targeting of interventions, Journal of the International Aids Society, ISSN:1758-2652

Silhol R, Gregson S, Nyamukapa C, et al., Empirical validation of the UNAIDS Spectrum model for subnational HIV estimates: case-study of children and adults in Manicaland, Zimbabwe, Aids, ISSN:0269-9370

Melegaro A, Del Fava E, Poletti P, et al., 2017, Social Contact Structures and Time Use Patterns in the Manicaland Province of Zimbabwe., Plos One, Vol:12

Tlhajoane M, Eaton JW, Takaruza A, et al., 2017, Prevalence and Associations of Psychological Distress, HIV Infection and HIV Care Service Utilization in East Zimbabwe., Aids Behav

Borquez A, Cori A, Pufall EL, et al., 2016, The Incidence Patterns Model to Estimate the Distribution of New HIV Infections in Sub-Saharan Africa: Development and Validation of a Mathematical Model, Plos Medicine, Vol:13, ISSN:1549-1676

More Publications