Systematic Reviews to inform Public Health Guidance on COVID-19
Rapid reviews of the effects of cloth and medical masks for preventing transmission of SARS-CoV-2 in community and household settings |
Title PIs: Nandi Siegfried, Terusha Chetty and Vundli Ramokolo Overview Global guidance on the use of masks varies. At the time of the current review in early April 2020, guidance on the use of cloth and medical masks in the South African general population and households (community settings) was urgently needed to enable decision-makers to ensure evidence-informed policies about preventing community transmission without depleting essential PPE stocks for health care workers. Since that time, face-coverings have been mandated for use in public, however, the need for a strong evidence base for population prevention measures remains. We conducted two rapid reviews of the evidence to quantify the effectiveness of cloth and medical masks in reducing the risk SARS-CoV-2 in community settings to inform evidence-based recommendations produced by the College of Public Health Medicine of South Africa. Our review showed that there were no studies of cloth masks in community settings. An RCT in a hospital setting provided indirect evidence that cloth masks increased viral infection risk compared to medical masks. Review of medical masks versus no masks provided low certainty evidence of infection risk reduction. Given that direct supportive evidence for the efficacy and effectiveness of cloth and medical masks is lacking, we argue that decisions about their use may be based on consideration of other factors such as feasibility, absence of harms and transmission factors for SARS-CoV-2. Well-designed comparative effectiveness studies between different types of mask are required to better inform policy for community settings and future pandemic preparedness. Furthermore, given that aerosolized SARS-CoV-2 can remain stable in the air for several hours, further research is required on the effectiveness of masks in protecting the wearer from acquiring the virus. Aims Collaboration Project status
Contact person |
A rapid review of the effectiveness of screening practices at airports, borders and ports to reduce the transmission of respiratory infectious diseases such as COVID-19 |
Title PIs: Dr Terusha Chetty, Dr. Brodie Daniels, Dr. Nobubelo Ngandu, Prof Ameena Goga Overview These results were submitted as a report to the South African Ministry of Health to inform health policy-makers of the evidence regarding travel screening and effectiveness of this intervention. Aims Collaboration Project status Contact person |
Is dilute sodium hypochlorite (bleach) solution for hand-washing safe and effective for reducing transmission of SARS-CoV-2 compared to alcohol hand sanitizer or soap and water hand-washing? |
Title PIs: Nandi Siegfried, Jim Te Water Naude; SAMRC Cochrane South Africa: Joy Oliver; SAMRC Health Systems Research Unit: Witness Chirinda. Overview COVID-19 is caused by the transmission from person to person of the enveloped RNA virus, SARS-CoV-2, either via respiratory droplet spread or via contaminated surfaces. UNICEF states that the virus envelope (covering) can be disrupted through regularly and thoroughly cleaning your hands by washing them with soap or water or using an alcohol-based hand rub. Dilute sodium hypochlorite at a concentration of 1:1000ppm (0.1%) is recommended by the National Institute of Communicable Disease as an effective disinfectant to wipe (not spray) surfaces to decontaminate where virus may be present. A more dilute solution (usually 0.05%) has been used for hand-washing in the context of other viral epidemic contexts such as for Ebola Virus (Wolfe et al 2017). A 2014 WHO rapid advice guideline, based on a systematic review, recommended that bleach/chlorine solutions currently in use for hand hygiene and glove disinfection for filoviruses (such as Ebola) may be used in the interim period in emergency situations until alcohol-based handrubs or soap and water become available. This was noted to be based on low quality evidence and was intended to be an interim measure. Current World Health Organization interim guidance (1st April 2020) - specifically for prevention of transmission of SARS-CoV-2 - recommends against chlorine hand washing solutions because of potential harm to users and those making the solutions, as well as degradation of chlorine exposed to sunlight or heat. The guidance recommends handwashing with soap and water a hand rubbing with an alcohol-based hand rub and notes that soap is generally cheap and easy to find, and liquid soap solutions can also be used. In South Africa, NICD guidelines stipulate that the percentage of alcohol in a sanitizer should not be less than 70% alcohol. Where water is in short supply, such as in rural schools, the use of alcohol sanitizers are advised as a substitute to soap and water hand-washing. The high cost of alcohol sanitizers has raised concerns about the longer-term sustainability of the use of these. Some communities have expressed concerns regarding the use of alcohol based on religious or cultural grounds. UNICEF notes that while alcohol-based hand sanitizer kills the coronavirus, it does not kill all kinds of bacteria and viruses, such as the norovirus and rotavirus. This rapid review aimed to evaluate the use of dilute bleach solution for hand-washing as an alternative to handwashing with soap and water and rubbing with alcohol sanitizer. Objectives To assess the safety and effectiveness of sodium chlorite solution for handwashing compared to handwashing with soap and water or alcohol-based sanitiser for preventing transmission of SARS-CoV-2 to inform College of Public Health Medicine guidance. Methods We conducted a rapid review of the evidence. We formulated the research question using the PICO format: Population: Any human populations Intervention: Handwashing with dilute sodium chlorite solution Comparators: Handwashing with soap and water or alcohol-based sanitizer (at least 60% alcohol) Outcomes: Study designs: Systematic Reviews Collaboration SAMRC Health Systems Research Unit Project status Contact person Dr Nandi Siegfried (nandi.siegfried@gmail.com) Dr. Witness Chirinda (witchirinda@gmail.com) |
Understanding SARS-CoV-2 (COVID-19) |
Title Author: Dr Nobubelo Ngandu A rapid literature review was conducted in March 2020 to give an early overview of SARS-CoV-2, its origins, phylogenetics, epidemiology, immune response and examples of early therapeutics and vaccine research. The overview was presented within the Health Systems Research Unit and the HIV Prevention Research Unit. The link to the slides can be found here.
Contact person: Nobubelo.Ngandu@mrc.ac.za |
What is the evidence for transmission of COVID-19 by children in schools? Living systematic review. |
Title: PI: Professor Evropi Theodoratou. University of Edinburgh Co-investigators: Dr Nandi Siegfried, Dr Catherine Mathews Overview Overall aim
The studies that will be included are tracing studies, viral Genotyping studies, modelling studies, sero-surveillance studies, and community prevalence studies before and after schools opening (controlled before after study) Collaboration Project status Contact person |
COVID-19 in Children: Prevelance and Clinical Characteristics
Prevalence, clinical characteristics, immunologic responses and outcomes of children with suspected or confirmed COVID-19 disease |
Title PIs:
Overview: To describe the epidemiology, clinical progression, immunologic responses and outcome of pediatric Covid-19 disease amongst paediatric patients with respiratory disease admitted to Steve Biko Academic and Tshwane District hospital in South Africa Methods:
Outcome: The Clinical course, immunological responses and outcomes of COVID 19 will be described as the characteristics of children with COVID-19 disease has not yet been described in African settings Intended Feedback of the study: Results will be published in peer reviewed journals, and reported to paediatric and public health communities in South Africa and internationally Project status: Recruitment in progress Contact person: Ameena Goga: Ameena.Goga@mrc.ac.za |
Impact of COVID-19 on Health, Food Security, access to Health and Social Services
Yomelela Community Phone Survey |
Title PIs: Dr Catherine Mathews; Prof Seth Kalichman Overview Overall aim Collaboration Project status Contact person |
PHANGISA COVID Study: Evaluating the effect of COVID-19 pandemic on HIV clinical health and uptake of routine HIV care and immunizations among PMTCT clients in a rural district |
Title PI: Dr Nobubelo Ngandu Overview The PHANGISA study was initiated in 2019, to measure risk factors for HIV transmission from mother to child in a rural district, Ehlanzeni district in Mpumalanga province. The 2019 baseline cross-sectional study enrolled 687 HIV-positive pregnant women and HIV-positive postnatal mothers paired with their babies aged 0-24 months. Data analyses is currently underway. In addition to high unemployment and poverty rates and undisclosed sexual partner’s HIV status, early findings indicate challenges in routine management of antiretroviral treatment to keep maternal viral load suppressed. Understanding how the needed uptake of healthcare visits to monitor HIV health and the health of the HIV-exposed child in this high-risk population with existing socio-economic challenges, is being affected by the COVID-19 pandemic and the lockdown restrictions, is important. Aims We aim to ask the over-arching question: “Has the COVID-19 pandemic and national lockdown resulted in increased poor HIV clinical outcomes and lower uptake of routine HIV care and childhood immunizations amongst HIV-positive postnatal mothers and their infants in a rural South African district?” Methods A before-and-after study design will be conducted. HIV-positive women and their babies, who took part in the baseline PHANGISA study in Ehlanzeni district during September to December 2019 will be invited to participate in this study. Quantitative data collection will be done using (i) telephonic interviews and (ii) data extraction of routine viral load testing and HIV testing episodes of study participants from the routine national health information systems. Measurement of outcomes post-COVID-19 lockdown will be compared to baseline and pre-COVID-19 lockdown outcomes. Collaboration National Institute of Communicable diseases, Stellenbosch University Funded by: National Department of Health Project status Approved by SAMRC ethics in July 2020. Data collection will begin in September 2020. Contact person Dr Nobubelo Ngandu: Nobubelo.Ngandu@mrc.ac.za |
Exploring the experiences of CSG recipients and non-recipients regarding coping, access to social protection, food security, income security, and safety in the time of Covid-19 |
Title PI: Dr Wanga Zembe-Mkabile, Dr Vundli Ramokolo, Prof Tanya Doherty Overview Study Aim To explore the experiences of Covid-19 among recipients and non-recipients of the CSG in Langa Township, Western Cape For this qualitative study we are conducting twenty telephonic qualitative interviews over two time points with participants (mother-child pairs) that we have been following up for two years in a longitudinal cohort study assessing the impact of the CSG on child nutritional status and food security. For this additional piece of research we are exploring participants’ experiences of accessing social grants in the time of Covid-19; their experiences of securing food for their children and households, experiences of restrictions to movement, loss of earnings due to not working and social distancing while living in informal settlements and or small housing structures with small or no yard space; experiences with safety; perspectives and concerns they might have for themselves and their children and families at this time; and what they see as the role of social grants and the CSG in particular in providing support to impoverished and vulnerable households and communities in the time of Covid-19. The study will provide learnings and lessons on how poor households reliant on small social grants cope during pandemics such as Covid-19 and the ways in which the social security system in South Africa can better respond to and support children and families from poor households. Collaboration Project status Contact person |
Opportunities from a new disease for an old threat: extending COVID-19 efforts to address Tuberculosis in South Africa |
Title PI: Dr. Marian Loveday Overview The COVID-19 pandemic and phased nationwide lockdown have impacted negatively on routine TB services, as activities to address this new pandemic have been prioritised across all sectors. Within the health system, the health workforce and resources have been redirected away from routine services towards the new disease priority. The lockdown has resulted in additional barriers to accessing TB care with early reports of a decline in TB diagnostic tests. Fewer TB diagnoses; less attention to adherence and support during TB treatment; poorer treatment outcomes; and consequent increased transmission, will increase the TB burden and TB-related mortality. People with TB or a history of TB are likely to be vulnerable to COVID-19. Aims Through a literature review and the perspective of members of a national TB Think Tank task team we aim to:
Collaboration The South African TB Think Tank “Optimising Treatment Outcomes” task team Contact person |
Patient experiences of the burden of TB in the context of syndemic interaction and social protection, before and during the COVID-19 crisis |
Title PI: Lieve Vanleeuw & Dr Wanga Zembe Overview Amid the COVID-19 crisis TB patients face increased vulnerability due to the consequences of the COVID-19 response such as loss of income, challenges to access healthcare services and anti-TB medication, increased stigma, and a loss of social support structures. Many of them are already poor, and many depend on informal work or have lost their jobs. The COVID-19 social and economic response in South Africa, however, might also offer some alleviation to TB patients’ burden by accessing the Covid-19 Social Relief of Distress Grant (SRDG) designed for unemployed working age adults who are destitute because of the virus. Our study will explore how the COVID-19 epidemic and response have affected the social, economic, and health situation of TB patients, as well as how COVID-19 measures to alleviate the social and economic effects of the COVID-19 epidemic and response such as the Social Relief of Distress Grant have affected TB patients’ vulnerability. Aims
Collaboration Tampere University Finland Tampere TB Foundation Finland Project status Protocol under review by SAMRC Ethics Committee Contact person Lieve Vanleeuw: Lieve.vanLeeuw@mrc.ac.za |
Exploring the impact of COVID-19 on healthcare service utilization for patients with communicable and non-communicable diseases in eThekwini Metro, South Africa: A qualitative study |
Title PI: Dr. Marian Loveday Overview: The COVID-19 pandemic and phased nationwide lockdown have impacted negatively on routine services for communicable diseases (CDs) and non- communicable diseases (NCDs). Not only has the health workforce and resources been redirected away from routine services towards the new disease priority, but the lockdown increased barriers to accessing routine primary health care, and there are early reports of declines in the pick-up of chronic medication, fewer immunisations and fewer TB diagnostic tests. Aim: The study has four specific objectives:
Collaboration: KwaZulu-Natal Department of Health, Interactive Research and Development (IRD) and Advance Access and Delivery (AA&D) |
An evaluation of the Mphatlalatsane Initiative |
Title PI: Prof. Ameena Goga, Dr Terusha Chetty and Prof. Helen Schneider Overview The National Department of Health (NDoH) is implementing an integrated sexual, reproductive, maternal and newborn health (SRMNH) initiative to improve sexual, reproductive, maternal and neonatal health outcomes in South Africa. This initiative called “Mphatlalatsane” (meaning “the last star before the dawn”) seeks to reduce unplanned pregnancies, maternal and neonatal mortality, and stillbirths, by testing a potentially replicable quality improvement (QI) model for national scale-up through government adoption and funding. The Mphatlalatsane Initiative embraces QI interventions to make small facility-based changes that the system can absorb and sustain if they work. The SAMRC, in partnership with the SAMRC Health Services to Systems Research Unit, School of Public Health, University of the Western Cape, is responsible for evaluating the impact and implementation processes of the Mphatlalatsane Initiative in the QI-intensive sites. The evaluation will only focus on the maternal and newborn components. On 30 January 2020, the World Health Organization (WHO) declared COVID-19 a public health emergency of international concern (PHEIC). As of 22 July 2020, more than 15 million confirmed cases across 118 countries and over 617 000 deaths have been reported; South Africa reported over 382 000 confirmed COVID-19 cases with 5 173 deaths. In March 2020, the South African government declared a state of disaster and implemented several measures to prevent the spread of the disease, restricting face-to-face interactions and allowing only essential activities. The effect that COVID-19 has had/will have on the uptake, continuity and quality of maternal and neonatal healthcare services is still uncertain; much depends on whether South Africa’s efforts to prevent further spread of the virus are effective. Generating research evidence on the impact of COVID-19 on SRMNH services is of utmost importance as it will inform policies and practises on how to mitigate some of that impact. The evaluation of Mphatlalatsane offers an ideal opportunity to add specific COVID-19 research questions. Aims The study objectives are as follows:
Collaboration Project status Contact person |
Health Economic Analyses to guide Investments in Health Systems for COVID-19
COVID-19: Cost effectiveness of purchasing critical care beds from the private sector |
Title PI: MOSAIC Mosaic Members Donela Besada, Susan Cleary, Emmanuelle Daviaud, Sumaiyah Docrat, Geetesh Solanki, Cynthia Tamandjou Tchuem, Tommy Wilkinson Aim The objective of this study was to examine the cost-effectiveness of purchasing critical bed capacity from the private sector during the COVID-19 pandemic. Methods The cost effectiveness assessment model which makes use of simple state transition modelling framework with a single cycle was built to carry out analysis. Collaboration: University of Cape Town Project status: Project completed. Publications: Open Source Model: *Cleary, Susan; Wilkinson, Tommy; Tamandjou Tchuem, Cynthia; Docrat, Sumaiyah; Besada, Donela; Daviaud, Emmanuelle; et al. (2020): MOSAIC: A model to assess the cost-effectiveness of ICU strategies for the South African COVID-19 response. University of Cape Town. Dataset. https://doi.org/10.25375/uct.12382706 Op Ed: Covid-19 surge: Investing heavily in ICU capacity is not the only option. https://www.samrc.ac.za/news/covid-19-surge-investing-heavily-icu-capacity-not-only-option Contact person: Geetesh Solanki(Geetesh.Solanki@mrc.ac.za) |
COVID-19: Cost effectiveness of dexamethasone |
Title PI: MOSAIC Mosaic Members Donela Besada, Susan Cleary, Emmanuelle Daviaud, Sumaiyah Docrat, Geetesh Solanki, Cynthia Tamandjou Tchuem, Tommy Wilkinson Aim The objective of this study was to examine the cost-effectiveness of dexamethasone in the treatment of COVID-19 and its impact on the cost effectiveness of ICU care. Methods The cost effectiveness assessment model which makes use of simple state transition modelling framework with a single cycle was built to carry out analysis. Collaboration: University of Cape Town Project status: Project completed. Publication: Open Source Model: https://doi.org/10.25375/uct.12563381 Op Ed: Wilkinson T, Cleary S. Tchuem CT, Docrat S, Daviaud E, Solanki G. Dexamethasone is not the Covid-19 ‘silver bullet’ we are looking for. Daily Maverick. 2020-07-9. https://www.dailymaverick.co.za/article/2020-07-09-dexamethasone-is-not-the-covid-19-silver-bullet-we-are-looking-for/#gsc.tab=0 Contact person: Geetesh Solanki(Geetesh.Solanki@mrc.ac.za) |
COVID-19: Economic burden of alcohol-related injuries in South Africa |
Title PI: MOSAIC Mosaic Members Donela Besada, Susan Cleary, Emmanuelle Daviaud, Sumaiyah Docrat, Geetesh Solanki, Cynthia Tamandjou Tchuem, Tommy Wilkinson Aim The purpose of the study was to assesses the potential economic burden of alcohol-related trauma events as provides an estimate of potentially foregone opportunities to manage COVID patients Methods The number of outpatient visits, general ward inpatient days and ICU days needed per event were modeled to estimate provider costs for each injury and total costs across all injury types Collaboration: University of Cape Town, Burden of Alcohol Unit SAMRC Project status: Project completed. Publication: Open Source Model: https://zivahub.uct.ac.za/articles/MOSAIC_A_model_to_assess_the_economic_burden_of_alcohol-related_injuries_in_South_Africa/12645929/1 Contact person: Donela Besada(Donnela.Besada@mrc.ac.za) |
COVID-19: Research Translation
Translation of the COVID-19 related research |
PI: Leonard Gentle Co-PI: Geetesh Solanki, Tanya Doherty, Collaboration: Various – depending on work. Aim: The aim of the project is to support the “translation” of the COVID-19 related research within the SAMRC with a view to ensuring that the research is accessible, relevant and meaningful to stakeholders – including government, policy makers, health officials and civil society - so that evidence-based health research may impact on public policy and thereby have virtuous health outcomes. Methods
Collaboration: Various Project status: On-going Publications: Op Eds
Interviews: Cape Talk; Radio 786 May 2020: N. Myburgh, Leonard Gentle Contact person: Leonard Gentle: Leonard.Gentle@mrc.ac.za |