Umoya omuhle is a three-year study that began in 2017 and uses a whole systems approach to look at infection prevention and control for drug-resistant tuberculosis in clinical settings of South Africa in an era of decentralised care. The name, Umoya omuhle, means good air in Zulu, and embodies the project vision of bringing a ‘breath of fresh air' to current thinking on infection prevention and control.
Umoya omuhle is a collaborative partnership between institutions in the United Kingdom and South Africa and involves people from many different research backgrounds and specialities.
The project is organised around a set of seven research questions looking at various aspects of TB infection prevention and control in healthcare facilities, with an aim to improve it.
A collection of resources relating to TB infection prevention and control, ranging from international guidelines to research papers.
Umoya omuhle: Infection prevention and control for drug-resistant tuberculosis in South Africa in the era of decentralised care: A whole systems approach
Umoya omuhle is a three-year study that began in 2017, and looks into the transmission of drug-resistant tuberculosis (DR-TB) in South African clinics. The name, Umoya omuhle, means good air in Zulu, and embodies the project vision of bringing a ‘breath of fresh air' to current thinking on infection prevention and control.
South Africa has one of the highest burdens of DR-TB, with more than 19,000 people diagnosed in 2016 according to WHO. Since 2011, its management has been increasingly decentralised to primary healthcare clinics.
Transmission of the disease happens in hospitals and clinics in South Africa, but no one knows how much clinical exposure contributes to this. What is known is that it is difficult to achieve and maintain implementation of existing guidelines for airborne infection prevention and control in health facilities. The physical design of clinics, organisation of care pathways inside the clinic, and the way health workers perceive the risks of tuberculosis may contribute to this.
Download a summary of our project here.
Our programme takes a whole systems approach to develop interventions to interrupt DR-TB in primary healthcare facilities in South Africa.
This interdisciplinary project will look at the social, biological, and infrastructural dynamics of DR-TB transmission, and the implementation of infection prevention and control in clinics in the provinces of Western Cape and KwaZulu-Natal, South Africa. It aims to inform, develop, and project the potential impact of health systems intervention in facilities in these areas.
The project approach sees the clinic as a dynamic site of interactions between policies, practices, and patients. We will focus on four areas of research to get a full picture of the environment that they operate in, including:
- Policy analysis to investigate how policies on infection and prevention control for DR-TB have evolved and are practiced in primary healthcare clinics
- Epidemiological studies to assess how much transmission in these clinics contributes to the existence of DR-TB at the community level
- Spatial mapping, workflow and infrastructural assessments to examine the role of clinic design, organisation of DR-TB transmission and general care and working practices that inhibit or foster infection and prevention control
- Ethnographic research to elucidate health worker and patient ideas about risk and responsibility
Mathematical and economic modelling can inform the design of interventions to reduce the risk of transmission of infections within health facilities by exploring the potential impact and cost-effectiveness of an intervention aiming to reduce the risk of transmission.
These models critically depend on the accuracy of assumptions about key parameters affecting transmission risk. Parameters include the number of contacts made per visit, the probability that a clinic attendee is infectious, and the probability that contact results in transmission, which for an airborne pathogen will depend on variables including proximity, contact duration and rate of air change. In turn, the parameters are driven by the movement of people within clinics, and therefore how clinics organize their appointments and manage queues/outpatient waiting areas.
Planned outputs for this research include the design of a health systems intervention package that reduces the transmission of DR-TB within healthcare clinics in South Africa with guidelines on behavioural and organisational changes required, and an assessment of the economic impact of an intervention on the health system, healthcare workers, patients, and the wider community.
This project contributes to the GCRF challenge areas of ‘Equitable Access to Sustainable Development’ and ‘Good Governance and Social Justice’ by promoting locally appropriate, systems-based approaches to sustainable health and wellbeing for both patients and health workers in South African health facilities.
The funding was awarded under the GCRF Tackling Antimicrobial Resistance: behaviour within and beyond the healthcare setting call. These grants are funded by the Economic and Social Research Council (ESRC) working in partnership with the Department of Health.
The support of the ESRC is gratefully acknowledged.
The project is partly funded by The Antimicrobial Resistance Cross Council Initiative supported by the seven UK research councils in partnership with other funders.
Umoya omuhle is a collaborative research project between institutions in the UK and South Africa.
Umoya omuhle inaugural meeting - November 2017, Durban, South Africa. L-R: Karina Kielmann, Hayley MacGregor, Ipeleng Sehunelo, Alvera Swartz, Anna Voce, Alison Swartz, Lindiwe Mvusi, Alison Grant, Anna Vassall, Tom Yates, Jacqui Ngozo, Kathy Baisley, Nicky McCreesh, Indira Govender
|Alison Grant (LSHTM, Africa Health Research Institute [AHRI]) is the principal investigator and a clinical epidemiologist. She initially trained as an infectious diseases physician, and has worked for over 20 years on projects aiming to improve care for people with HIV in South Africa, and particularly TB prevention and treatment.|
|Karina Kielmann (Queen Margaret University [QMU]) is the co-principal investigator, and a medical anthropologist with training in anthropology and public health. She has 15 years of experience of applying social science theory and methods to global health issues, in particular strengthening of health systems for tuberculosis and HIV care.|
|Kathy Baisley (LSHTM, AHRI) is a statistician. Her research interests include the epidemiology of HIV and other sexually transmitted infections in sub-Saharan Africa, with a focus on design and analysis of intervention trials.|
|Fiametta Bozzani (LSHTM) is a health economist. Her work is mainly in the area of economic evaluation, with a practical focus on supporting decision-making on resource allocation in low- and middle-income countries.|
|Adrienne Burrough (LSHTM) is the project financial and administrative manager with experience in administering and managing both overseas and UK projects and writing funding proposals.|
|Chris Colvin (University of Cape Town [UCT]) is a medical anthropologist. His research interests include the interface between communities and health systems in the context of HIV/AIDS, TB and maternal and child health.|
|Idriss Kallon (UCT) is a social scientist. His background is in social and health science; sociology and public health, and his research is on continuity of care for patients diagnosed with TB referred from hospitals in South Africa.|
|Aaron Karat (LSHTM) is a TB epidemiologist. His research interests include clinical and health systems interventions to reduce morbidity and mortality in people with HIV and/or TB and methods used to estimate mortality in resource-limited settings.|
|Hannah Keal (AHRI) is a communications manager. Her interests are in science communication and public engagement.|
|Indira Govender (LSHTM) is a clinical research fellow. She is a public health medicine specialist based in South Africa with clinical, management and research experience.|
|Rein Houben (LSHTM) is an epidemiologist and mathematical modeller. His focus is on applying mathematical models to address academic questions, inform policy decisions and enable capacity building. His academic research focuses on latent infection and socio-economic determinants.|
|Claire McLellan (QMU) is an institute officer. Her interests are in higher education communications, particularly around research project dissemination.|
|Nicky McCreesh (LSHTM) is a mathematical modeller. Her research looks at how spatial data can improve TB care and control intervention impact, and how contact data can be used to understand potential transmission sites and inform infection control interventions.|
|Hayley MacGregor (Institute of Development Studies) is a medical anthropologist. Originally trained as a doctor in South Africa, her research interests include poverty and illness/disability, citizen mobilisation in health provisioning, and ethnography of biomedical research and health technologies.|
|Alex Pym (AHRI) initially trained as a physician, before conducing the first clinical trials ever for MDR-TB. In 2011, he established a lab in KwaZulu-Natal focused on mechanisms of antibiotic resistance and tolerance in M. tuberculosis, which he currently runs.|
|Janet Seeley (LSHTM, AHRI) is a social anthropologist. Her research interests are the social aspects of health, particularly HIV across the life course and impact on communities, lives and livelihoods, as well as poverty, social protection, mobility and migration.|
|Naomi Stewart (LSHTM) is a communications officer. Her interests are in science communication and science policy, focused on the nexus of the public, policy, and research.|
|Alison Swartz (UCT) is a social scientist trained in social anthropology and public health. Her research has focused on community health workers, the synthesis of qualitative data for qualitative systematic reviews and more recently, youth, gender identity and sexual partnerships.|
|Anna Vassall (LSHTM) is a health economist. Her research interests are in the priority setting and economic evaluation for HIV, TB and sexual reproductive health, as well as 'real world' evaluation methods.|
|Anna Voce (University of KwaZulu-Natal) is a public health practitioner. Her research interests are in the public health aspects of reproductive and maternal health, in health systems strengthening, and in health system leadership, particularly in South Africa.|
|Richard White (LSHTM) a mathematical modeller. He leads the TB Modelling Group and is Director of the TB Modelling and Analysis Consortium. His research focus is the mathematical and statistical modelling of the transmission and control of infectious diseases, particularly TB and HIV.|
|Tom Yates (University College London) is a clinician and epidemiologist. His research focuses on the transmission of Mycobacterium tuberculosis in high burden settings.|
|Gimenne Zwama (QMU) is a social scientist. She has 5 years of experience conducting action research in low- and middle-income countries, mostly in South Africa, particularly on increasing health care accessibility for marginalised communities.|
Umoya omuhle is organised into a set of seven research questions around TB infection prevention and control.
- Describe the policy and systems context.
- Estimate the contribution of healthcare facilities in DR-TB transmission.
- Examine the effect of clinic design and working practices.
- Understand healthcare workers perceptions of risk and responsibility.
- Design whole-systems interventions to improve TB infection prevention and control.
- Use mathematical modelling to look at the effect of possible interventions on transmission.
- Estimate the costs and economic impact of proposed interventions.
RQ: Research question
DR-TB: Drug-resistant tuberculosis
IPC: Infection prevention and control
HCW: Healthcare worker
August 2019 - We recently held an expert workshop on TB transmission in South African primary healthcare facilities, gathering perspectives from policymakers and practitioners.
May 2019 - The Umoya omuhle team attended their third investigators' meeting in Ballito, South Africa. The four-day meeting reviewed project progress to date, reviewing qualitative and quantitative data from 12 health care facilities in KwaZulu-Natal and the Western Cape provinces. The investigators also met with the project reference group which included Ms Jacqui Ngozo, Director of TB programmes, KwaZulu-Natal Department of Health; Dr Vanessa Mudaly, a senior medical officer for health programmes at the HAST Directorate in the Western Cape Provincial Government; Professor Helen Schneider, a public health specialist and health systems and policy researcher from the University of the Western Cape and Dr Thiloshini Govender, a public health medicine specialist and occupational health physician at the King Dinuzulu Hospital.
The aim of this meeting was to consider and prioritise, based on evidence obtained to date, possible interventions to reduce transmission of tuberculosis in primary healthcare facilities in South Africa. The project will employ an innovative approach - system dynamics modelling - to engage policymakers and practitioners to identify, design, and prioritise potential interventions at a meeting in August.
[L-R Anna Voce; Gimenne Zwama; Karin Diaconu, Sanj Karat; Idriss Kallon; Jacqui Ngozo; Indira Govender; Hayley MacGregor; Alison Grant; Alison Swartz; Thilo Govender; Tom Yates; Nicky McCreesh; Fiamma Bozzani. Photo: Adrienne Burrough]
During the course of the Umoya omuhle project, literature that is relevant to whole systems approaches to infection prevention and control for drug-resistant tuberculosis in South Africa in the era of decentralised care are being gathered in regular newsletters, available below.