Imperial College London


Faculty of MedicineSchool of Public Health

Professor of Global Health



+44 (0)20 7594 1150timothy.hallett




Norfolk PlaceSt Mary's Campus






I am based at the Department of Infectious Disease Epidemiology. My work with the Applied HIV Epidemiology research group centres on the development and application of mathematical models for interpreting surveillence data, analyzing control trials and planning interventions. The overall aim of this research is to come to conclusions about the optimal use of limited resources in the response to HIV epidemic worldwide. 


I direct the HIV Modelling Consortium, which is a network epidemiologists, mathematical modellers and health-economists. I also work with UNAIDS and the Reference Group on Estimates, Modelling and Projections in developing the methods for calculating international AIDS statistics.


I serve on the PEPFAR Scientific Advisory Board and am a member of the editorial board of PLoS Medicine 


I co-direct the MSc course in Epidemiology and lecture on the Department's short course on Infectious Disease Modelling. 


I am also an Affiliate Associate Professor at the University of Washington, Department of Global Health.




Estimating Incidence Spreadsheet (AIDS, 2010)

Child Mortality Bias Estimation Model (Bulletin WHO, 2010)





Moorhouse L, Schaefer R, Thomas R, et al., 2019, Application of the HIV prevention cascade to identify, develop,and evaluate interventions to improve use of prevention methods:Examples from a study in east Zimbabwe, Journal of the International Aids Society, Vol:22, ISSN:1758-2652, Pages:86-92

Phillips AN, Cambiano V, Nakagawa F, et al., Cost-per-diagnosis as a metric for monitoring cost effectiveness of HIV testing programmes in low income settings in southern Africa: health economic and modelling analysis, Journal of the International Aids Society, ISSN:1758-2652

Beacroft L, Hallett TB, 2019, The potential impact of a "curative intervention" for HIV: a modelling study., Global Health Research and Policy, Vol:4, ISSN:2397-0642, Pages:1-8

Christian S, Anna B, Dobromir D, et al., 2019, Targeting and vaccine durability are key for population-level impact and cost-effectiveness of a pox-protein HIV vaccine tegimen in South Africa, Vaccine, Vol:37, ISSN:0264-410X, Pages:2258-2267

Heffernan A, Cooke G, Nayagam S, et al., 2019, Scaling up prevention and treatment towards the elimination of hepatitis C: a global mathematical model, Lancet, Vol:393, ISSN:0140-6736, Pages:1319-1329

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