Timothy B Hallett

Summary

Affiliation: Imperial College
Country: UK

Publications

  1. ncbi Optimal uses of antiretrovirals for prevention in HIV-1 serodiscordant heterosexual couples in South Africa: a modelling study
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, United Kingdom
    PLoS Med 8:e1001123. 2011
  2. ncbi Estimates of HIV incidence from household-based prevalence surveys
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, London, UK
    AIDS 24:147-52. 2010
  3. ncbi Measuring and correcting biased child mortality statistics in countries with generalized epidemics of HIV infection
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, London, W2 1PG, England
    Bull World Health Organ 88:761-8. 2010
  4. ncbi Will circumcision provide even more protection from HIV to women and men? New estimates of the population impact of circumcision interventions
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Sex Transm Infect 87:88-93. 2011
  5. ncbi Errors in 'BED'-derived estimates of HIV incidence will vary by place, time and age
    Timothy B Hallett
    Imperial College London, London, United Kingdom
    PLoS ONE 4:e5720. 2009
  6. ncbi The role of testing and counselling for HIV prevention and care in the era of scaling-up antiretroviral therapy
    T B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, Norfolk Place, London, UK
    Epidemics 1:77-82. 2009
  7. ncbi Estimating the HIV incidence rate: recent and future developments
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, London, UK
    Curr Opin HIV AIDS 6:102-7. 2011
  8. ncbi Estimating incidence from prevalence in generalised HIV epidemics: methods and validation
    Timothy B Hallett
    Imperial College London, London, United Kingdom
    PLoS Med 5:e80. 2008
  9. ncbi Understanding the impact of male circumcision interventions on the spread of HIV in southern Africa
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom
    PLoS ONE 3:e2212. 2008
  10. ncbi Estimating the resources required in the roll-out of universal access to antiretroviral treatment in Zimbabwe
    T B Hallett
    Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Sex Transm Infect 87:621-8. 2011

Detail Information

Publications31

  1. ncbi Optimal uses of antiretrovirals for prevention in HIV-1 serodiscordant heterosexual couples in South Africa: a modelling study
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, United Kingdom
    PLoS Med 8:e1001123. 2011
    ..Earlier ART and PrEP might both reduce HIV-1 transmission in this group, but the merits and synergies of these different approaches have not been analyzed...
  2. ncbi Estimates of HIV incidence from household-based prevalence surveys
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, London, UK
    AIDS 24:147-52. 2010
    ..To estimate HIV incidence in the general population in countries where there have been two recent household-based HIV prevalence surveys (the Dominican Republic, Mali, Niger, Tanzania, and Zambia)...
  3. ncbi Measuring and correcting biased child mortality statistics in countries with generalized epidemics of HIV infection
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, London, W2 1PG, England
    Bull World Health Organ 88:761-8. 2010
    ....
  4. ncbi Will circumcision provide even more protection from HIV to women and men? New estimates of the population impact of circumcision interventions
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Sex Transm Infect 87:88-93. 2011
    ..However, these projections need revision to incorporate new data on the effect of male circumcision on the risk of acquiring and transmitting HIV...
  5. ncbi Errors in 'BED'-derived estimates of HIV incidence will vary by place, time and age
    Timothy B Hallett
    Imperial College London, London, United Kingdom
    PLoS ONE 4:e5720. 2009
    ....
  6. ncbi The role of testing and counselling for HIV prevention and care in the era of scaling-up antiretroviral therapy
    T B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, Norfolk Place, London, UK
    Epidemics 1:77-82. 2009
    ..HIV Testing and Counselling (TC) programmes are being scaled-up as part of efforts to provide universal access to antiretroviral treatment (ART)...
  7. ncbi Estimating the HIV incidence rate: recent and future developments
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, London, UK
    Curr Opin HIV AIDS 6:102-7. 2011
    ..To describe the needs for information on the rate of new HIV infections (incidence) in epidemics and review developments in various methods for its estimation...
  8. ncbi Estimating incidence from prevalence in generalised HIV epidemics: methods and validation
    Timothy B Hallett
    Imperial College London, London, United Kingdom
    PLoS Med 5:e80. 2008
    ..Repeated cross-sectional measures of HIV prevalence are now becoming available for general populations in many countries, and we aim to develop and validate methods that use these data to estimate HIV incidence...
  9. ncbi Understanding the impact of male circumcision interventions on the spread of HIV in southern Africa
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom
    PLoS ONE 3:e2212. 2008
    ..We have used a mathematical model, parameterised using existing trial findings, to understand and predict the impact of circumcision programmes at the population level...
  10. ncbi Estimating the resources required in the roll-out of universal access to antiretroviral treatment in Zimbabwe
    T B Hallett
    Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Sex Transm Infect 87:621-8. 2011
    ..Understanding how current practices relate to future resource requirements can help optimise ART programmes and inform long-term public health planning...
  11. ncbi The impact of monitoring HIV patients prior to treatment in resource-poor settings: insights from mathematical modelling
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, United Kingdom
    PLoS Med 5:e53. 2008
    ..We investigated the potential influence of alternative patient management and ART initiation strategies on the impact of ART programmes in sub-Saharan Africa...
  12. ncbi Measuring effectiveness in community randomized trials of HIV prevention
    T B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, UK
    Int J Epidemiol 37:77-87. 2008
    ..Complicated HIV transmission dynamics make it unclear how to design and interpret results from community-randomized controlled trials (CRCT) of interventions to prevent infection...
  13. ncbi Age at first sex and HIV infection in rural Zimbabwe
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, St Mary s Campus, Norfolk Place, London, UK
    Stud Fam Plann 38:1-10. 2007
    ..This finding can be explained by their having a greater lifetime number of sexual partners than those whose first sexual experience occurs later...
  14. ncbi Behaviour change in generalised HIV epidemics: impact of reducing cross-generational sex and delaying age at sexual debut
    T B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Sex Transm Infect 83:i50-54. 2007
    ..The importance of reducing cross-generational sex (young women having sex with older men) and delaying age at first sex on the spread of HIV at the population-level has been presumed but not scientifically investigated and quantified...
  15. ncbi Appropriate evaluation of HIV prevention interventions: from experiment to full-scale implementation
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Sex Transm Infect 83:i55-60. 2007
    ..Remarkably little is known about how best to reduce HIV incidence because most trials focus on the reduction of risk behaviours and assume an effect on HIV incidence...
  16. ncbi Declines in HIV prevalence can be associated with changing sexual behaviour in Uganda, urban Kenya, Zimbabwe, and urban Haiti
    T B Hallett
    Department of Infectious Disease Epidemiology, Imperial College, Norfolk Place, London W2 1PG, UK
    Sex Transm Infect 82:i1-8. 2006
    ..To determine whether observed changes in HIV prevalence in countries with generalised HIV epidemics are associated with changes in sexual risk behaviour...
  17. ncbi Estimating the risk of HIV transmission from homosexual men receiving treatment to their HIV-uninfected partners
    Timothy B Hallett
    Department of Infectious Disease Epidemiology, Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Sex Transm Infect 87:17-21. 2011
    ..To determine how the risk of HIV transmission from homosexual men receiving antiretroviral treatment is related to patterns of patient monitoring and condom use...
  18. ncbi HIV decline associated with behavior change in eastern Zimbabwe
    Simon Gregson
    Department of Infectious Disease Epidemiology, Imperial College London, UK
    Science 311:664-6. 2006
    ..Sexually experienced men and women reported reductions in casual sex of 49 and 22%, respectively, whereas recent cohorts reported delayed sexual debut. Selective AIDS-induced mortality contributed to the decline in HIV prevalence...
  19. ncbi Patterns of self-reported behaviour change associated with receiving voluntary counselling and testing in a longitudinal study from Manicaland, Zimbabwe
    Ide Cremin
    Department of Infectious Disease Epidemiology, Imperial College London, St Marys Campus, Norfolk Place, Paddington, London, W2 1PG, UK
    AIDS Behav 14:708-15. 2010
    ..This study suggests that, among women, particularly those who are infected, behavioural risk reduction does occur following VCT...
  20. ncbi Assessing adult mortality in HIV-1-afflicted Zimbabwe (1998 -2003)
    Ben A Lopman
    Department of Infectious Disease Epidemiology, Imperial College London, England
    Bull World Health Organ 84:189-97. 2006
    ..To compare alternative methods to vital registration systems for estimating adult mortality, and describe patterns of mortality in Manicaland, Zimbabwe, which has been severely affected by HIV...
  21. ncbi HIV decline in Zimbabwe due to reductions in risky sex? Evidence from a comprehensive epidemiological review
    Simon Gregson
    Department of Infectious Disease Epidemiology, Imperial College London, London, UK
    Int J Epidemiol 39:1311-23. 2010
    ..We assessed the contributions of rising mortality, falling HIV incidence and sexual behaviour change to the decline in HIV prevalence...
  22. ncbi Assessing evidence for behaviour change affecting the course of HIV epidemics: a new mathematical modelling approach and application to data from Zimbabwe
    Timothy B Hallett
    Imperial College London, London, UK
    Epidemics 1:108-17. 2009
    ..We aimed to develop a method to evaluate evidence for changes in risk behaviour altering the course of an HIV epidemic...
  23. ncbi Condom use by female sex workers and their clients in Mexico: who decides and does it matter?
    Annick Bórquez
    Department of Infectious Disease Epidemiology, Imperial College, London, UK
    Sex Transm Infect 87:254-6. 2011
    ..To explore the effect of different patterns of condom use by clients and female sex workers (FSW) on HIV transmission in Mexico...
  24. ncbi Mathematical models in the evaluation of health programmes
    Geoffrey P Garnett
    Department of Infectious Disease Epidemiology, Imperial College London, London, UK
    Lancet 378:515-25. 2011
    ..The degree of rigor in model development and assessment can vary greatly, and there is a danger that existing beliefs inappropriately influence judgments about model assumptions and results...
  25. ncbi Concurrent sexual partnerships and primary HIV infection: a critical interaction
    Jeffrey W Eaton
    Department of Infectious Disease Epidemiology, Imperial College London, St Mary s Campus, Norfolk Place, London, W2 1PG, UK
    AIDS Behav 15:687-92. 2011
    ..The sensitivity of epidemic spread to the amount of concurrency is greater than predicted by models that do not include primary HIV infection...
  26. ncbi Evidence for changes in behaviour leading to reductions in HIV prevalence in urban Malawi
    George Bello
    Ministry of Health, Lilongwe, Malawi
    Sex Transm Infect 87:296-300. 2011
    ..At the epicentre of the HIV epidemic in Eastern Africa, HIV prevalence has appeared to stabilise in most countries. However, there are indications that the HIV epidemic in Malawi has recently declined...
  27. ncbi Role of widows in the heterosexual transmission of HIV in Manicaland, Zimbabwe, 1998-2003
    B A Lopman
    Department of Infectious Disease Epidemiology, Imperial College London, London, UK
    Sex Transm Infect 85:i41-8. 2009
    ..AIDS is the main driver of young widowhood in southern Africa...
  28. ncbi Interpreting declines in HIV prevalence: impact of spatial aggregation and migration on expected declines in prevalence
    P T Walker
    Department of Infectious Disease Epidemiology, Faculty of Medicine, Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Sex Transm Infect 84:ii42-8. 2008
    ..Declines in the prevalence of HIV might occur due to natural epidemic dynamics rather than changes in risk behaviour. Determining the cause of an observed decline is important in understanding the epidemiology of HIV...
  29. ncbi Examining the promise of HIV elimination by 'test and treat' in hyperendemic settings
    Peter J Dodd
    Imperial College London, London, UK
    AIDS 24:729-35. 2010
    ....
  30. ncbi Sex with stitches: assessing the resumption of sexual activity during the postcircumcision wound-healing period
    Paul C Hewett
    Population Council, Lusaka, Zambia
    AIDS 26:749-56. 2012
    ..This study uses observational data collected as part of Zambia's male circumcision program to measure sexual behavior in the postsurgical healing period and to model its influence on HIV transmission for men and their partners...
  31. ncbi Late entry to HIV care limits the impact of anti-retroviral therapy in The Netherlands
    Colette Smit
    HIV Monitoring Foundation Amsterdam, Amsterdam, The Netherlands
    PLoS ONE 3:e1949. 2008
    ..To explain differences in survival in the first three years of combination anti-retroviral therapy (cART) between HIV treatment centres in The Netherlands...