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Jaber T, Boelee E, Bleser J, Bartram JK. Outbreaks of faecal-orally transmitted diseases in displacement camps: A scoping review of pathogens, risk factors, exposure routes, and drivers of transmission. Glob Public Health 2024; 19:2380847. [PMID: 39052912 DOI: 10.1080/17441692.2024.2380847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 07/10/2024] [Indexed: 07/27/2024]
Abstract
Many forcibly displaced people reside in camps characterised by precarious living conditions, exposing them to numerous health risks. This scoping review elucidated the risk factors and exposure routes implicated in outbreaks of faecal-oral pathogens in camps, as well as the context-specific drivers of transmission that shape these outbreaks. Journal articles were identified from PubMed, Embase, Scopus, and Web of Science. Portals for grey literature were also searched. A total of 48 records, published between 1937 and 2022, were included in the analysis. Cholera outbreaks were the most frequently reported. Risk factors included drinking water from shallow wells and rivers, consuming ice and leftover food, and inconsistent handwashing. These indicate exposure through vehicles of transmission in both public and domestic domains, emphasising the importance of a multipronged approach to outbreak prevention and control. Outbreaks were often exacerbated by extreme weather events and acute population influxes that damage or overwhelm water and sanitation facilities. Such shocks warrant explicit recommendations in preparedness and response guidelines. Development projects and outbreak response measures in surrounding areas may reduce the risk of importing pathogens into camps. Future research could further investigate faecal-oral pathogens other than Vibrio cholerae and analyse the co-occurrence of the identified transmission drivers.
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Affiliation(s)
- Tarek Jaber
- School of Business and Economics, Maastricht University, Maastricht, the Netherlands
- UNU-MERIT, Maastricht, the Netherlands
- Department of Freshwater Ecology and Water Quality, Deltares, Utrecht, the Netherlands
| | - Eline Boelee
- Department of Freshwater Ecology and Water Quality, Deltares, Utrecht, the Netherlands
| | - Julia Bleser
- Department of Freshwater Ecology and Water Quality, Deltares, Utrecht, the Netherlands
| | - Jamie K Bartram
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- School of Civil Engineering, University of Leeds, Leeds, UK
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Ghassemi EY, Thorseth AH, Le Roch K, Heath T, White S. Mapping the association between mental health and people's perceived and actual ability to practice hygiene-related behaviours in humanitarian and pandemic crises: A scoping review. PLoS One 2023; 18:e0286494. [PMID: 38096240 PMCID: PMC10721104 DOI: 10.1371/journal.pone.0286494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 11/21/2023] [Indexed: 12/17/2023] Open
Abstract
Humanitarian crises such as disease outbreaks, conflict and displacement and natural disasters affect millions of people primarily in low- and middle-income countries. Here, they often reside in areas with poor environmental health conditions leading to an increased burden of infectious diseases such as gastrointestinal and respiratory infections. Water, sanitation, and hygiene behaviours are critical to prevent such infections and deaths. A scoping review was conducted to map out what is known about the association between three mental health disorders and people's perceived and actual ability to practice hygiene-related behaviours, particularly handwashing, in humanitarian and pandemic crises. Published and grey literature was identified through database searches, humanitarian-relevant portals, and consultations with key stakeholders in the humanitarian sector. 25 publications were included, 21 were peer-reviewed published articles and four were grey literature publications. Most of the studies were conducted in mainland China (n = 12) and most were conducted in an outbreak setting (n = 20). Six studies found a positive correlation between handwashing and anxiety where participants with higher rates of anxiety were more likely to practice handwashing with soap. Four studies found an inverse relationship where those with higher rates of anxiety were less likely to wash their hands with soap. The review found mixed results for the association between handwashing and depression, with four of the seven studies reporting those with higher rates of depression were less likely to wash their hands, while the remaining studies found that higher depression scores resulted in more handwashing. Mixed results were also found between post-traumatic stress disorder (PTSD) and handwashing. Two studies found that lower scores of PTSD were associated with better hygiene practices, including handwashing with soap. The contradictory patterns suggest that researchers and practitioners need to explore this association further, in a wider range of crises, and need to standardize tools to do so.
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Affiliation(s)
- Emily Yasmin Ghassemi
- Department of Disease Control, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Astrid Hasund Thorseth
- Department of Disease Control, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | | | | | - Sian White
- Department of Disease Control, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
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Marcus H, Hanna L, Tait P, Stone S, Wannous C. Climate Change and the Public Health Imperative for Supporting Migration as Adaptation. J Migr Health 2023; 7:100174. [PMID: 36968560 PMCID: PMC10034433 DOI: 10.1016/j.jmh.2023.100174] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/27/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
In an era of accelerating global climate change, human mobility has reached unprecedented levels. While it is acknowledged that many cases of human migration in the context of climate change are forced or involuntary, particularly where adaptation measures have failed to achieve sufficient resiliency of communities against impending slow- and sudden-onset disasters. There are also many cases where migration is, itself, a voluntary adaptive measure to secure otherwise unattainable physical safety and life-sustaining resources. It is in these cases that migration can be viewed as adaptation. Under the right policy conditions, it is possible for such adaptive migration to save countless lives. Moreover, it can achieve remarkable health and well-being gains for otherwise vulnerable communities residing on environmentally degrading lands and disproportionately suffering from the health impacts of climate change. While several activists have spoken loudly on the topic of climate migration, emphasizing the human rights imperative for supportive global policy action, the public health community has not been equally vocal nor unanimous in its stance. This paper, a product of the World Federation of Public Health Associations (WFPHA) Environmental Health Working Group, aims to rectify this gap, by analyzing adaptive climate migration through a public health lens. In doing so, it argues that creating an enabling environment for adaptive climate migration is not just a human rights imperative, but also a public health one. This argument is supported by evidence demonstrating how creating such an enabling environment can synergistically support the fulfillment of key public health services and functions, as outlined under the internationally endorsed Global Charter for the Public's Health of the WFPHA.
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Conzatti A, Kershaw T, Copping A, Coley D. A review of the impact of shelter design on the health of displaced populations. JOURNAL OF INTERNATIONAL HUMANITARIAN ACTION 2022; 7:18. [PMID: 37519834 PMCID: PMC9425791 DOI: 10.1186/s41018-022-00123-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 06/22/2022] [Indexed: 08/01/2023]
Abstract
There are currently millions of displaced people encamped in low-quality shelters that jeopardise the health of these displaced populations. These shelters, which exhibit poor thermal regulation and air quality, are often inhabited by households for several years. Recently, the internal environment of shelters has been recognised as a determinant of the health of the occupants and the indoor air quality (IAQ) and internal temperatures have been identified as critical factors affecting occupants' health. Attempts by researchers and private companies to develop healthier shelter solutions have mainly prioritised factors such as rapid deployment, transportability and sustainability. Via a systematic bibliometric analysis of the existing literature, this review examines the impact of shelters' internal environment on occupant health. Self-reports and building simulation are the most common methodologies reported in the literature, but there is a disconnect between the reported shelter issues and their impact on health. This is likely due to the multifaceted and site-specific factors analysed. Indoor air quality, thermal comfort and overcrowding are the most commonly identified shelter issues, which are strongly related to the presence of infectious and airborne diseases. An analysis of the available literature indicates that there is still a lack of clear guidance linking shelter quality to health. Moreover, evidence of the impact of shelters on health is harder to find, and there is a gap regarding the metrics and the methodology used to evaluate shelter quality. Therefore, further research is necessary to provide evidence of the impact of shelter design on health through transdisciplinary approaches.
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Affiliation(s)
- Anna Conzatti
- Department of Architecture and Civil Engineering, University of Bath, Claverton Down, Bat, UK
| | - Tristan Kershaw
- Department of Architecture and Civil Engineering, University of Bath, Claverton Down, Bat, UK
| | - Alexander Copping
- Department of Architecture and Civil Engineering, University of Bath, Claverton Down, Bat, UK
| | - David Coley
- Department of Architecture and Civil Engineering, University of Bath, Claverton Down, Bat, UK
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García R, Naves A, Anta J, Ron M, Molinero J. Drinking water provision and quality at the Sahrawi refugee camps in Tindouf (Algeria) from 2006 to 2016. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 780:146504. [PMID: 34030293 DOI: 10.1016/j.scitotenv.2021.146504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/09/2021] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Drinking water provision has been a constant challenge in the Sahrawi refugee camps, located in the desert near Tindouf (Algeria). The drinking water supply system is itself divided in three zones which pump groundwater from different deep aquifers. It is equipped with reverse osmosis plants and chlorination systems for treating water. The allocation of water supplied to the Saharawi refugees for human consumption in 2016 has been estimated at between 14 and 17 L/person/day on average. This supplied water volume is below recommended standards, and also below the strategic objective of the Sahrawi government (20 L/person/day). Yet the local groundwater resources are huge in comparison with estimated consumption, and hence there is great potential for increasing the supplied volume through effecting improvements in the supply system. The physico-chemical quality of the raw and supplied water between 2006 and 2016 has been assessed according to Algerian standards for human consumption. The raw water of two zones of the supply system presents a very high conductivity and high concentrations of chloride, nitrate, fluoride, sulfate, sodium, calcium, potassium and iodide concentrations of natural origin, which may entail health risks. The treatment of water in a reverse osmosis plant greatly improves its quality and osmosed water met the standards. However, the supply of osmosed and raw water needs to be combined in Zone 1, to avoid an excessive reduction in water volume, and the supplied raw water poses a risk to the health of the refugees. The present study provides an example of a drinking water supply system under extreme drought conditions and in the political and social conditions of a refugee camp. Furthermore, it establishes a reference for supplied water allocation and quality in the Sahrawi refugee camps.
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Affiliation(s)
| | - Acacia Naves
- Universidade da Coruña, Advanced Scientific Research Center (CICA), A Coruña, Spain.
| | - Jose Anta
- Universidade da Coruña, Water and environmental engineering research team (GEAMA), Civil Engineering School, A Coruña, Spain.
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Thorseth AH, Heath T, Sisay A, Hamo M, White S. An exploratory pilot study of the effect of modified hygiene kits on handwashing with soap among internally displaced persons in Ethiopia. Confl Health 2021; 15:35. [PMID: 33947443 PMCID: PMC8097963 DOI: 10.1186/s13031-021-00368-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 04/19/2021] [Indexed: 11/21/2022] Open
Abstract
Background Internally displaced persons fleeing their homes due to conflict and drought are particularly at risk of morbidity and mortality from diarrhoeal diseases. Regular handwashing with soap (HWWS) could substantially reduce the risk of these infections, but the behaviour is challenging to practice while living in resource-poor, informal settlements. To mitigate these challenges, humanitarian aid organisations distribute hygiene kits, including soap and handwashing infrastructure. Our study aimed to assess the effect of modified hygiene kits on handwashing behaviours among internally displaced persons in Moyale, Ethiopia. Methods The pilot study evaluated three interventions: providing liquid soap; scented soap bar; and the inclusion of a mirror in addition to the standard hygiene kit. The hygiene kits were distributed to four study arms. Three of the arms received one of the interventions in addition to the standard hygiene kit. Three to six weeks after distribution the change in behaviour and perceptions of the interventions were assessed through structured observations, surveys and focus group discussions. Results HWWS was rare at critical times for all study arms. In the liquid soap arm, HWWS was observed for only 20% of critical times. This result was not indicated significantly different from the control arm which had a prevalence of 17% (p-value = 0.348). In the mirror and scented soap bar intervention arms, HWWS prevalence was 11 and 10%, respectively. This was indicated to be significantly different from the control arm. Participants in the focus group discussions indicated that liquid soap, scented soap bar and the mirror made handwashing more desirable. In contrast, participants did not consider the soap bar normally distributed in hygiene kits as nice to use. Conclusion We found no evidence of an increased prevalence of handwashing with soap following distribution of the three modified hygiene kits. However, our study indicates the value in better understanding hygiene product preferences as this may contribute to increased acceptability and use among crisis-affected populations. The challenges of doing research in a conflict-affected region had considerable implications on this study’s design and implementation. Trial registration The trial was registered at www.ClinicalTrials.gov 6 September 2019 (reg no: NCT04078633). Supplementary Information The online version contains supplementary material available at 10.1186/s13031-021-00368-3.
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Affiliation(s)
- Astrid Hasund Thorseth
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK.
| | | | | | - Mare Hamo
- Action Against Hunger, Addis Ababa, Ethiopia
| | - Sian White
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK
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Cooper B, Behnke NL, Cronk R, Anthonj C, Shackelford BB, Tu R, Bartram J. Environmental health conditions in the transitional stage of forcible displacement: A systematic scoping review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 762:143136. [PMID: 33153751 DOI: 10.1016/j.scitotenv.2020.143136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 10/10/2020] [Accepted: 10/11/2020] [Indexed: 06/11/2023]
Abstract
In 2019, 30,000 people were forced to leave their homes due to conflict, persecution, and natural disaster each day. Eighty-five percent of refugees live in developing countries, and they often face underfunded and inadequate environmental health services. Many displaced persons live in camps and other temporary settlements long after the displacement event occurs. However, there is little evidence on environmental health conditions in the transitional phase-defined by the United Nations High Commissioner for Refugees as six months to two years after displacement. To address this gap in research, we conducted a systematic scoping review of environmental health conditions, exposures, and outcomes in transitional displacement settings, as well as reported obstacles and recommendations for improvement. Eighty-eight publications met the inclusion criteria. Water supply was the most frequently discussed environmental health topic. Overcrowding was the most common risk factor reported, Vibrio cholerae was the most common pathogen reported, and diarrhea was the most commonly reported health outcome. Obstacles and recommendations were categorized as institutional, political or implementation-based. Identified knowledge gaps included minimal information on setting logistics and on topics such as menstrual hygiene, oral hygiene and fomite contamination. In order to improve environmental health conditions in transitional displacement settings, all levels of government and non-governmental organizations should increase collaboration to improve resource provision. This study is the first to report on environmental health conditions in this important time of transition between the emergency and protracted stages of displacement.
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Affiliation(s)
- Brittany Cooper
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States
| | - Nikki L Behnke
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States
| | - Ryan Cronk
- ICF, 2635 Meridian Pkwy Suite 200, Durham, NC 27713.
| | - Carmen Anthonj
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States; Faculty of Geo-Information Science and Earth Observation, ITC, University of Twente, Enschede, the Netherlands
| | - Brandie Banner Shackelford
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States
| | - Raymond Tu
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States
| | - Jamie Bartram
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States; School of Civil Engineering, University of Leeds, Woodhouse Ln, Woodhouse, Leeds LS2 9DY, United Kingdom
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Howard G, Bartram J, Brocklehurst C, Colford JM, Costa F, Cunliffe D, Dreibelbis R, Eisenberg JNS, Evans B, Girones R, Hrudey S, Willetts J, Wright CY. COVID-19: urgent actions, critical reflections and future relevance of 'WaSH': lessons for the current and future pandemics. JOURNAL OF WATER AND HEALTH 2020; 18:613-630. [PMID: 33095188 DOI: 10.2166/wh.2020.162] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The COVID-19 pandemic placed hygiene at the centre of disease prevention. Yet, access to the levels of water supply that support good hand hygiene and institutional cleaning, our understanding of hygiene behaviours, and access to soap are deficient in low-, middle- and high-income countries. This paper reviews the role of water, sanitation and hygiene (WaSH) in disease emergence, previous outbreaks, combatting COVID-19 and in preparing for future pandemics. We consider settings where these factors are particularly important and identify key preventive contributions to disease control and gaps in the evidence base. Urgent substantial action is required to remedy deficiencies in WaSH, particularly the provision of reliable, continuous piped water on-premises for all households and settings. Hygiene promotion programmes, underpinned by behavioural science, must be adapted to high-risk populations (such as the elderly and marginalised) and settings (such as healthcare facilities, transport hubs and workplaces). WaSH must be better integrated into preparation plans and with other sectors in prevention efforts. More finance and better use of financing instruments would extend and improve WaSH services. The lessons outlined justify no-regrets investment by government in response to and recovery from the current pandemic; to improve day-to-day lives and as preparedness for future pandemics.
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Affiliation(s)
- Guy Howard
- Department of Civil Engineering, University of Bristol, Bristol, UK E-mail: ; † Co-first-authors
| | - Jamie Bartram
- School of Civil Engineering, University of Leeds, Leeds, UK; Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; † Co-first-authors
| | - Clarissa Brocklehurst
- Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; ‡ Authors in alphabetical order
| | - John M Colford
- Division of Epidemiology, University of California, Berkeley, CA, USA; ‡ Authors in alphabetical order
| | - Federico Costa
- Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Brazil; ‡ Authors in alphabetical order
| | - David Cunliffe
- Department for Health and Wellbeing, Adelaide, South Australia, Australia; ‡ Authors in alphabetical order
| | - Robert Dreibelbis
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK; ‡ Authors in alphabetical order
| | | | - Barbara Evans
- School of Civil Engineering, University of Leeds, Leeds, UK; ‡ Authors in alphabetical order
| | - Rosina Girones
- Department of Genetics, Microbiology and Statistics, University of Barcelona, Barcelona, Spain; ‡ Authors in alphabetical order
| | - Steve Hrudey
- Faculty of Medicine and Dentistry, University of Alberta, Alberta, Canada; ‡ Authors in alphabetical order
| | - Juliet Willetts
- Institute for Sustainable Futures, University of Technology Sydney, Sydney, Australia; ‡ Authors in alphabetical order
| | - Caradee Y Wright
- Environmental and Health Research Unit, South African Medical Research Council, Department of Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, South Africa; ‡ Authors in alphabetical order
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Behnke NL, Cronk R, Shackelford BB, Cooper B, Tu R, Heller L, Bartram J. Environmental health conditions in protracted displacement: A systematic scoping review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 726:138234. [PMID: 32481202 DOI: 10.1016/j.scitotenv.2020.138234] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 03/24/2020] [Accepted: 03/25/2020] [Indexed: 05/28/2023]
Abstract
Adequate environmental health services are critical for human rights, health, and development, especially in the context of forced displacement. There are more than 70 million forcibly displaced persons worldwide, most in protracted situations, having been displaced for more than two years. Some live in camps or informal settlements, but most live in urban areas. Environmental health services are important in the transition from emergency response to sustainable development in these settings, but evidence on environmental health in displaced populations is disparate and of variable quality. We conducted a systematic scoping review of environmental conditions, exposures, and outcomes in protracted displacement settings; obstacles to improvement in environmental health services; and recommendations made for improvement. We included 213 publications from peer-reviewed and grey literature databases. Data were extracted on environmental health topics including water, sanitation, hygiene, overcrowding, waste management, energy supply, vector control, menstrual hygiene, air quality, and food safety. Most studies present data from low- and lower-middle income countries. Northern Africa and Western Asia and Sub-Saharan Africa are the most-represented regions. There is substantial evidence on water, sanitation, and crowding, but few studies report findings on other environmental health topics. Water-related disease, parasites, and respiratory infections are frequently cited and studies report that services often fail to meet international standards for humanitarian response. The most frequent obstacles and recommendations are institutional, political, or implementation-related, but few studies provide concrete recommendations for improvement. Our review compiles and characterizes the research on environmental health in protracted displacement. We recommend including displaced populations in international environmental health policy and monitoring initiatives, and bridging from humanitarian response to sustainable development by preparing for long-term displacement from the early stages of a crisis.
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Affiliation(s)
- Nikki L Behnke
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States.
| | - Ryan Cronk
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States
| | - Brandie Banner Shackelford
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States
| | - Brittany Cooper
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States
| | - Raymond Tu
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States
| | - Leo Heller
- René Rachou Institute, Oswaldo Cruz Foundation, Av. Augusto de Lima, 1715 Belo Horizonte, Brazil; Office of the United Nations High Commissioner for Human Rights (OHCHR), Palais des Nations, CH-1211 Geneva 10, Switzerland
| | - Jamie Bartram
- The Water Institute at UNC, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, United States; School of Civil Engineering, University of Leeds, Woodhouse Ln, Woodhouse, Leeds LS2 9DY, United Kingdom
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