Imperial College London

ProfessorSimonGregson

Faculty of MedicineSchool of Public Health

Professor in Demography and Behavioural Science
 
 
 
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Contact

 

+44 (0)20 7594 3279s.gregson

 
 
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Location

 

LG27Praed StreetSt Mary's Campus

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Summary

 

Publications

Publication Type
Year
to

262 results found

Schur N, Nyamukapa C, Gregson S, 2013, KNOWLEDGE AND UPTAKE OF HIV INTERVENTION AND PREVENTION SERVICES IN MANICALAND, ZIMBABWE: CURRENT DETERMINANTS OF COVERAGE AND PROGRESS OVER TIME, SEXUALLY TRANSMITTED INFECTIONS, Vol: 89, Pages: A369-A369, ISSN: 1368-4973

Journal article

Pufall EL, Nyamukapa C, Eaton JW, Mutsindiri R, Chawira G, Munyati S, Robertson L, Gregson Set al., 2013, HIV IN CHILDREN IN A GENERAL POPULATION SAMPLE IN SOUTHERN AFRICA: PREVALENCE, CAUSES AND EFFECTS, SEXUALLY TRANSMITTED INFECTIONS, Vol: 89, Pages: A163-A163, ISSN: 1368-4973

Journal article

Elmes J, Nhongo K, Hallett T, White P, Ward H, Garnett G, Nyamukapa C, Gregson Set al., 2013, THE SOCIAL ORGANISATION OF SEX WORK IN RURAL EASTERN ZIMBABWE AND ITS IMPLICATIONS FOR HIV INFECTION, SEXUALLY TRANSMITTED INFECTIONS, Vol: 89, Pages: A179-A180, ISSN: 1368-4973

Journal article

Gregson S, Nyamukapa C, Schumacher C, Magutshwa-Zitha S, Skovdal M, Yekeye R, Sherr L, Campbell Cet al., 2013, Evidence for a contribution of the community response to HIV decline in eastern Zimbabwe?, AIDS CARE-PSYCHOLOGICAL AND SOCIO-MEDICAL ASPECTS OF AIDS/HIV, Vol: 25, Pages: S88-S96, ISSN: 0954-0121

Journal article

Krivelyova A, Kakietek J, Connolly H, Bonnel R, Manteuffel B, Rodriguez-Garcia R, N'Jie N, Berruti A, Gregson S, Agrawal Ret al., 2013, Funding and expenditure of a sample of community-based organizations in Kenya, Nigeria, and Zimbabwe, AIDS CARE-PSYCHOLOGICAL AND SOCIO-MEDICAL ASPECTS OF AIDS/HIV, Vol: 25, Pages: S20-S29, ISSN: 0954-0121

Journal article

Campbell C, Scott K, Nhamo M, Nyamukapa C, Madanhire C, Skovdal M, Sherr L, Gregson Set al., 2013, Social capital and HIV Competent Communities: The role of community groups in managing HIV/AIDS in rural Zimbabwe, AIDS CARE-PSYCHOLOGICAL AND SOCIO-MEDICAL ASPECTS OF AIDS/HIV, Vol: 25, Pages: S114-S122, ISSN: 0954-0121

Journal article

Gregson S, Nyamukapa CA, Sherr L, Mugurungi O, Campbell Cet al., 2013, Grassroots community organizations' contribution to the scale-up of HIV testing and counselling services in Zimbabwe, AIDS, Vol: 27, Pages: 1657-1666, ISSN: 0269-9370

Journal article

Skovdal M, Magutshwa-Zitha S, Campbell C, Nyamukapa C, Gregson Set al., 2013, Community groups as 'critical enablers' of the HIV response in Zimbabwe, BMC HEALTH SERVICES RESEARCH, Vol: 13, ISSN: 1472-6963

Journal article

Campbell C, Nhamo M, Scott K, Madanhire C, Nyamukapa C, Skovdal M, Gregson Set al., 2013, The role of community conversations in facilitating local HIV competence: case study from rural Zimbabwe, BMC PUBLIC HEALTH, Vol: 13, ISSN: 1471-2458

Journal article

Skovdal M, Mushati P, Robertson L, Munyati S, Sherr L, Nyamukapa C, Gregson Set al., 2013, Social acceptability and perceived impact of a community-led cash transfer programme in Zimbabwe, BMC PUBLIC HEALTH, Vol: 13, ISSN: 1471-2458

Journal article

Robertson L, Mushati P, Eaton JW, Dumba L, Mavise G, Makoni J, Schumacher C, Crea T, Monasch R, Sherr L, Garnett GP, Nyamukapa C, Gregson Set al., 2013, Effects of unconditional and conditional cash transfers on child health and development in Zimbabwe: a cluster-randomised trial, LANCET, Vol: 381, Pages: 1283-1292, ISSN: 0140-6736

Journal article

Skovdal M, Magutshwa-Zitha S, Campbell C, Nyamukapa C, Gregson Set al., 2013, Children's role in the community response to HIV in Zimbabwe, JOURNAL OF THE INTERNATIONAL AIDS SOCIETY, Vol: 16

Journal article

Butler AR, Smith JA, Polis CB, Gregson S, Stanton D, Hallett TBet al., 2013, Modelling the global competing risks of a potential interaction between injectable hormonal contraception and HIV risk, AIDS, Vol: 27, Pages: 105-113, ISSN: 0269-9370

Background: Some, but not all, observational studies have suggested an increase in the risk of HIV acquisition for women using injectable hormonal contraception (IHC).Methods: We used country-level data to explore the effects of reducing IHC use on the number of HIV infections, the number of live births and the resulting net consequences on AIDS deaths and maternal mortality for each country.Results: High IHC use coincides with high HIV incidence primarily in southern and eastern Africa. If IHC increases the risk of HIV acquisition, this could generate 27 000–130 000 infections per year globally, 87–88% of which occur in this region. Reducing IHC use could result in fewer HIV infections but also a substantial increase in live births and maternal mortality in countries with high IHC use, high birth rates and high maternal mortality: mainly southern and eastern Africa, South-East Asia, and Central and South America. For most countries, the net impact of reducing IHC use on maternal and AIDS-related deaths is dependent on the magnitude of the assumed IHC–HIV interaction.Conclusions: If IHC use increases HIV acquisition risk, reducing IHC could reduce new HIV infections; however, this must be balanced against other important consequences, including unintended pregnancy, which impacts maternal and infant mortality. Unless the true effect size approaches a relative risk of 2.19, it is unlikely that reductions in IHC could result in public health benefit, with the possible exception of those countries in southern Africa with the largest HIV epidemics.

Journal article

Robertson L, Mushati P, Eaton JW, Sherr L, Makoni JC, Skovdal M, Crea T, Mavise G, Dumba L, Schumacher C, Munyati S, Nyamukapa C, Gregson Set al., 2012, Household-based cash transfer targeting strategies in Zimbabwe: Are we reaching the most vulnerable children?, SOCIAL SCIENCE & MEDICINE, Vol: 75, Pages: 2503-2508, ISSN: 0277-9536

Journal article

Campbell C, Nhamo M, Nyamukapa C, Madanhire C, Scott K, Skovdal M, Sherr L, Gregson Set al., 2012, Social capital and AIDS competent communities: evidence from eastern Zimbabwe, JOURNAL OF THE INTERNATIONAL AIDS SOCIETY, Vol: 15, Pages: 169-170

Journal article

Robertson L, Mushati P, Eaton JW, Dumba L, Mavise G, Makoni JC, Schumacher C, Crea T, Monasch R, Sherr L, Garnett GP, Nyamukapa C, Gregson Set al., 2012, Conditional cash transfers improve birth registration and school attendance amongst orphans and vulnerable children in Manicaland, Zimbabwe, JOURNAL OF THE INTERNATIONAL AIDS SOCIETY, Vol: 15, Pages: 158-159

Journal article

Skovdal M, Robertson L, Mushati P, Nyamukapa C, Sherr L, Gregson Set al., 2012, Community-led cash transfers in Zimbabwe: pathways for buy-in and improved child health and development, JOURNAL OF THE INTERNATIONAL AIDS SOCIETY, Vol: 15, Pages: 207-207

Journal article

Campbell C, Skovdal M, Mupambireyi Z, Madanhire C, Robertson L, Nyamukapa CA, Gregson Set al., 2012, Can AIDS stigma be reduced to poverty stigma? Exploring Zimbabwean children's representations of poverty and AIDS, CHILD CARE HEALTH AND DEVELOPMENT, Vol: 38, Pages: 732-742, ISSN: 0305-1862

Journal article

Cremin I, Cauchemez S, Garnett GP, Gregson Set al., 2012, Patterns of uptake of HIV testing in sub-Saharan Africa in the pre-treatment era, TROPICAL MEDICINE & INTERNATIONAL HEALTH, Vol: 17, Pages: e26-e37, ISSN: 1360-2276

Journal article

Zaba B, Kasamba I, Floyd S, Isingo R, Herbst K, Baernighausen T, Gregson S, Nyamukapa C, Kayuni N, Todd J, Marston M, Wringe Aet al., 2012, Using age-specific mortality of HIV infected persons to predict Anti-Retroviral Treatment need: a comparative analysis of data from five African population-based cohort studies, TROPICAL MEDICINE & INTERNATIONAL HEALTH, Vol: 17, Pages: e3-e14, ISSN: 1360-2276

Journal article

Crea TM, Lombe M, Robertson LA, Dumba L, Mushati P, Makoni JC, Mavise G, Eaton JW, Munatsi B, Nyamukapa CA, Gregson Set al., 2012, Asset ownership among households caring for orphans and vulnerable children in rural Zimbabwe: The influence of ownership on children's health and social vulnerabilities, AIDS Care, Vol: 25, Pages: 126-132, ISSN: 0954-0121

The high prevalence of human immunodeficiency virus/acquired immune deficiency syndrome in sub-Saharan Africa has resulted in a dramatic increase in orphans and vulnerable children (OVC) over the past decade. These children typically rely on extended family networks for support, but the magnitude of the crisis has resulted in traditional familial networks becoming overwhelmed and more economically and socially vulnerable. Previous research consistently demonstrates the positive influence of household asset ownership on children's well-being. Using data from impoverished households caring for OVC in rural Manicaland Province, Zimbabwe, this study explores the influence of household asset ownership on OVC health vulnerability (HV) and social vulnerability (SV). Findings indicate that asset ownership is associated with significantly lower SV, in terms of school attendance and birth registration. Yet, assets do not emerge as a direct influence of OVC HV as measured by disease and chronic illness, although having a chronically ill adult in the household increases HV. These findings suggest that asset ownership, specifically a combination of fixed and movable assets, may offset the influence of other risk factors for children's SV.

Journal article

Mohlala BKF, Gregson S, Boily M-C, 2012, Barriers to involvement of men in ANC and VCT in Khayelitsha, South Africa, Aids Care, Vol: 24, Pages: 972-977, ISSN: 1360-0451

We used qualitative methods to assess pregnant women and men's attitudes, feelings, beliefs, experiences and reactions to male partners' involvement in antenatal clinic (ANC) in Khayelitsha, Cape Town, South Africa. The aims of these studies were to determine barriers to male partners' attendance of ANC with their pregnant female partners and to identify possible strategies to overcome these barriers. Findings from the qualitative studies demonstrated that pregnant women were keen to invite their male sexual partners and that men would attend if invited. The main barrier to male participation was lack of awareness and the healthcare facility environment. The findings of these studies emphasized the need to increase awareness among men in Khayelitsha of the need for male attendance of ANC and the need to address the barriers to male attendance of ANC. It was clear that community sensitization programmes coupled with improvement of the health facility environment to be receptive to men are essential for increasing male attendance of ANC.

Journal article

Campbell C, Skovdal M, Mupambireyi Z, Madanhire C, Nyamukapa C, Gregson Set al., 2012, Building adherence-competent communities: Factors promoting children's adherence to anti-retroviral HIV/AIDS treatment in rural Zimbabwe, HEALTH & PLACE, Vol: 18, Pages: 123-131, ISSN: 1353-8292

Journal article

Howitt P, Darzi A, Yang GZ, Ashrafian H, Atun R, Barlow J, Blakemore A, Bull AMJ, Car J, Conteh L, Cooke GS, Ford N, Gregson SAJ, Kerr K, King D, Kulendran M, Malkin RA, Majeed A, Matlin S, Merrifield R, Penfold HA, Reid SD, Smith PC, Stevens MM, Templeton MR, Vincent C, Wilson Eet al., 2012, Technologies for global health, The Lancet, Vol: 380, Pages: 507-535

Journal article

Hallett TB, Gregson S, Dube S, Mapfeka ES, Mugurungi O, Garnett GPet al., 2011, Estimating the resources required in the roll-out of universal access to antiretroviral treatment in Zimbabwe, SEXUALLY TRANSMITTED INFECTIONS, Vol: 87, Pages: 621-628, ISSN: 1368-4973

Journal article

Mohlala BKF, Boily M-C, Gregson S, 2011, The forgotten half of the equation: randomized controlled trial of a male invitation to attend couple voluntary counselling and testing, AIDS, Vol: 25, Pages: 1535-1541, ISSN: 0269-9370

Journal article

Skovdal M, Campbell C, Nhongo K, Nyamukapa C, Gregson Set al., 2011, Contextual and psychosocial influences on antiretroviral therapy adherence in rural Zimbabwe: towards a systematic framework for programme planners, INTERNATIONAL JOURNAL OF HEALTH PLANNING AND MANAGEMENT, Vol: 26, Pages: 296-318, ISSN: 0749-6753

Journal article

Eaton J, Takavarasha F, Gregson S, Hallett T, Mason P, Robertson L, Schumacher C, Nyamukapa C, Garnett Get al., 2011, INCREASING ADOLESCENT HIV PREVALENCE IN NORTHEASTERN ZIMBABWE: EVIDENCE OF LONG-TERM SURVIVORS OF MOTHER TO CHILD TRANSMISSION, SEXUALLY TRANSMITTED INFECTIONS, Vol: 87, Pages: A28-A29, ISSN: 1368-4973

Journal article

Robertson L, Mushati P, Eaton J, Schumacher C, Gregson S, Nyamukapa Cet al., 2011, EDUCATION AND LIFETIME RISK OF HIV INFECTION IN MANICALAND, ZIMBABWE, SEXUALLY TRANSMITTED INFECTIONS, Vol: 87, Pages: A197-A197, ISSN: 1368-4973

Journal article

Gregson S, 2011, MULTI-LEVEL STRATEGIES TO EVALUATE THE IMPACT OF HIV PREVENTION PROGRAMMES IN ZIMBABWE, SEXUALLY TRANSMITTED INFECTIONS, Vol: 87, Pages: A4-A4, ISSN: 1368-4973

Journal article

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