A framework for targeting water,sanitation and hygiene interventions in pastoralist populations in the Afar region of Ethiopia

Globally, many populations face structural and environmental barriers to access safe water, sanitation and hygiene (WASH) services. Among these populations are many of the 200 million pastoralists whose livelihood patterns and extreme environmental settings challenge conventional WASH programming approaches. In this paper, we studied the Afar pastoralists in Ethiopia to identify WASH interventions that can mostly alleviate public health risks, within the population's structural and environmental living constraints. Surveys were carried out with 148 individuals and observational assessments made in 12 households as part of a Pastoralist Community WASH Risk Assessment. The results show that low levels of access to infrastructure are further compounded by risky behaviours related to water containment, storage and transportation. Additional behavioural risk factors were identified related to sanitation, hygiene and animal husbandry. The Pastoralist Community WASH Risk Assessment visually interprets the seriousness of the risks against the difficulty of addressing the problem. The assessment recommends interventions on household behaviours, environmental cleanliness, water storage, treatment and hand hygiene via small-scale educational interventions. The framework provides an approach for assessing risks in other marginal populations that are poorly understood and served through conventional approaches.     

Health impact of water and sanitation infrastructure reconstruction programmes in eight Central American communities affected by Hurricane Mitch

In response to Hurricane Mitch, which struck Central America in October-November 1998, the American Red Cross (ARC) and the Centers for Disease Control and Prevention (CDC) collaborated on a 3-year evaluation of the public health impact of ARC's water, sanitation and hygiene education activities in eight study areas in Honduras, Nicaragua, El Salvador and Guatemala. The evaluation compared: 1) access to and use of water and sanitation facilities, 2) the use of hygienic behaviours, and 3) diarrhoeal prevalence in children younger than 3 years of age before (February 2000) and after (February 2002) the interventions had been implemented. The evaluation included household and key informant interviews designed to measure these three components. Water quality of community water sources and household water was evaluated by measuring levels of indicator bacteria. During the final survey, an infrastructure evaluation provided a review of the design, construction, and current operation and maintenance of the water systems and latrines. The integrated water and sanitation infrastructure interventions and hygiene education programmes implemented following Hurricane Mitch effectively decreased diarrhoea prevalence in the target communities.     

Health impact of water and sanitation infrastructure reconstruction programmes in eight Central American communities affected by Hurricane Mitch

In response to Hurricane Mitch, which struck Central America in October–November 1998, the American Red Cross (ARC) and the Centers for Disease Control and Prevention (CDC) collaborated on a 3-year evaluation of the public health impact of ARC's water, sanitation and hygiene education activities in eight study areas in Honduras, Nicaragua, El Salvador and Guatemala. The evaluation compared: 1) access to and use of water and sanitation facilities, 2) the use of hygienic behaviours, and 3) diarrhoeal prevalence in children younger than 3 years of age before (February 2000) and after (February 2002) the interventions had been implemented. The evaluation included household and key informant interviews designed to measure these three components. Water quality of community water sources and household water was evaluated by measuring levels of indicator bacteria. During the final survey, an infrastructure evaluation provided a review of the design, construction, and current operation and maintenance of the water systems and latrines. The integrated water and sanitation infrastructure interventions and hygiene education programmes implemented following Hurricane Mitch effectively decreased diarrhoea prevalence in the target communities.     

Situation analysis and epidemiology of infectious disease transmission: a South-East Asian regional perspective

This paper analyses the situation in countries comprising the WHO South-East Asia Region with respect to water supply and sanitation services, hygiene and the epidemiology of related infectious diseases. Recently, published data from the WHO/UNICEF Global Water Supply and Sanitation Assessment 2000 report was reviewed to depict the situation with respect to consumers' access to improved water supply and sanitation services. It was shown that access to improved drinking water supplies is among the lowest in the world, and that sanitation coverage in this region is below all others. The paper also reviews selected surveys of hygiene behaviours in several countries of the region. Associations are suggested between access to services, hygienic practices and specific infectious diseases. The need is acknowledged to improve the evidence base on linkages between infectious diseases and water, sanitation and hygiene, and specific recommendations are made in this regard. There is a need now and for the foreseeable future to promote low-cost household-level interventions, including behaviour change strategies, that mitigate the health consequences of the current situation with respect to water supply, sanitation and hygiene. The role of health authorities in meeting this challenge, and as advocates for accelerating development of the water and sanitation sector, is highlighted.     

实施WES项目对农村环境卫生的影响

目的 了解实施水与环境卫生(WES)项目对农村环境卫生的影响。方法 在实施WES项目的县选择8个改厕村和1个未改厕(对照)村调查户厕内苍蝇密度、蛆密度和臭度,同时按照统一调查表调查农民卫生知识、行为、改厕满意度。结果 改厕户的卫生厕所苍蝇密度、蛆密度和臭度均低于未改厕户的旧式厕所,差异均有显著性(P<0.05)。实施WES项目的村居民卫生知识水平、卫生行为和习惯均优于未开展WES项目的村。改厕户居民对卫生厕所的满意度高达94.8％。结论 实施WES项目提高了农村环境卫生整体水平。     

Integrated disease management: arboviral infections and waterborne diarrhoea

Water-related diseases such as diarrhoeal diseases from viral, bacterial and parasitic organisms and Aedes-borne arboviral diseases are major global health problems. We believe that these two disease groups share common risk factors, namely inadequate household water management, poor sanitation and solid waste management. Where water provision is inadequate, water storage is essential. Aedes mosquitoes commonly breed in household water storage containers, which can hold water contaminated with enteric disease-causing organisms. Microbiological contamination of water between source and point-of-use is a major cause of reduced drinking-water quality. Inadequate sanitation and solid waste management increase not only risk of water contamination, but also the availability of mosquito larval habitats. In this article we discuss integrated interventions that interrupt mosquito breeding while also providing sanitary environments and clean water. Specific interventions include improving storage container design, placement and maintenance and scaling up access to piped water. Vector control can be integrated into sanitation projects that target sewers and drains to avoid accumulation of stagnant water. Better management of garbage and solid waste can reduce the availability of mosquito habitats while improving human living conditions. Our proposed integration of disease interventions is consistent with strategies promoted in several global health frameworks, such as the sustainable development goals, the global vector control response, behavioural change, and water, sanitation and hygiene initiatives. Future research should address how interventions targeting water, sanitation, hygiene and community waste disposal also benefit Aedes-borne disease control. The projected effects of climate change mean that integrated management and control strategies will become increasingly important.     

Changing hygiene behaviours: a cluster-randomized trial,Ethiopia

ObjectiveTo determine whether a water, sanitation and hygiene intervention could change hygiene behaviours thought to be important for trachoma control.MethodsWe conducted a cluster-randomized trial in rural Ethiopia from 9 November 2015 to 5 March 2019. We randomized 20 clusters to an intervention consisting of water and sanitation infrastructure and hygiene promotion and 20 clusters to no intervention. All intervention clusters received a primary-school hygiene curriculum, community water point, household wash station, household soap and home visits from hygiene promotion workers. We assessed intervention fidelity through annual household surveys.FindingsOver the 3 years, more wash stations, soap and latrines were seen at households in the intervention clusters than the control clusters: risk difference 47 percentage points (95% confidence interval, CI: 41–53) for wash stations, 18 percentage points (95% CI: 12–24) for soap and 12 percentage points (95% CI: 5–19) for latrines. A greater proportion of people in intervention clusters reported washing their faces with soap (e.g. risk difference 21 percentage points; 95% CI: 15–27 for 0–5 year-old children) and using a latrine (e.g. risk difference 9 percentage points; 95% CI: 2–15 for 6–9 year-old children). Differences between the intervention and control arms were not statistically significant for many indicators until the programme had been implemented for at least a year; they did not decline during later study visits.ConclusionThe community- and school-based intervention was associated with improved hygiene access and behaviours, although changes in behaviour were slow and required several years of the intervention.     

A review of water and sanitation provision in refugee camps in association with selected health and nutrition indicators - the need for integrated service provision

The first global overview of basic water and sanitation indicators in refugee camps is presented (using data from 2003–2006) and compared with selected health and nutrition indicators. This demonstrates that average levels of water and sanitation provision are acceptable at camp level but many refugee operations are suffering from gaps that cross-cut these sectors; e.g. typically poor sanitation provision is corresponding with low per capita availability of water. These findings were confirmed at household level with two household surveys undertaken in African refugee camps; households reporting a case of diarrhoea within the previous 24 hours collect on average 26% less water than those not reporting any cases. In addition, typically higher levels of morbidity of one infectious agent are also reflected across other infectious agents; this is reinforced by comparing the relationship between morbidity and nutrition status from selected camps. The importance that hygiene, environmental conditions and local settings have on health (both of refugees and also local communities) is underlined. Interventions to improve indicators across the water, sanitation, health and nutrition sectors rely not only on increased and sustained resources but must entail an integrated approach to simultaneously tackle short-comings across all these vital sectors.     

A review of water and sanitation provision in refugee camps in association with selected health and nutrition indicators--the need for integrated service provision

The first global overview of basic water and sanitation indicators in refugee camps is presented (using data from 2003-2006) and compared with selected health and nutrition indicators. This demonstrates that average levels of water and sanitation provision are acceptable at camp level but many refugee operations are suffering from gaps that cross-cut these sectors; e.g. typically poor sanitation provision is corresponding with low per capita availability of water. These findings were confirmed at household level with two household surveys undertaken in African refugee camps; households reporting a case of diarrhoea within the previous 24 hours collect on average 26% less water than those not reporting any cases. In addition, typically higher levels of morbidity of one infectious agent are also reflected across other infectious agents; this is reinforced by comparing the relationship between morbidity and nutrition status from selected camps. The importance that hygiene, environmental conditions and local settings have on health (both of refugees and also local communities) is underlined. Interventions to improve indicators across the water, sanitation, health and nutrition sectors rely not only on increased and sustained resources but must entail an integrated approach to simultaneously tackle short-comings across all these vital sectors.     

How valuable are environmental health interventions? Evaluation of water and sanitation programmes in India

Objective

To evaluate and quantify the economic benefits attributable to improvements in water supply and sanitation in rural India.

Methods

We combined propensity-score “pre-matching” and rich pre–post panel data on 9500 households in 242 villages located in four geographically different districts to estimate the economic benefits of a large-scale community demand-driven water supply programme in Maharashtra, India. We calculated coping costs and cost of illness by adding across several elements of coping and illness and then estimated causal impacts using a difference-in-difference strategy on the pre-matched sample. The pre–post design allowed us to use a difference-in-difference estimator to measure “treatment effect” by comparing treatment and control villages during both periods. We compared average household costs with respect to out-of-pocket medical expenses, patients'' lost income, caregiving costs, time spent on collecting water, time spent on sanitation, and water treatment costs due to filtration, boiling, chemical use and storage.

Findings

Three years after programme initiation, the number of households using piped water and private pit latrines had increased by 10% on average, but no changes in hygiene-related behaviour had occurred. The behavioural changes observed suggest that the average household in a programme community could save as much as 7 United States dollars per month (or 5% of monthly household cash expenditures) in coping costs, but would not reduce illness costs. Poorer, socially marginalized households benefited more, in alignment with programme objectives.

Conclusion

Given the renewed interest in water, sanitation and hygiene outcomes, evaluating the economic benefits of environmental interventions by means of causal research is important for understanding the true value of such interventions.     

甘肃贫困农村小学环境卫生与个人卫生干预研究

目的 评价综合干预对贫困农村小学环境卫生和个人卫生的干预效果.方法 采用整群抽样的方法,以甘肃省陇南某贫困县33所农村小学校及其学生为干预对象,以校内饮用水、环境卫生、学生个人卫生知识及行为、学生肠道寄生虫病患病及生长发育情况作为干预效果评价,比较干预措施实施的效果.结果 干预后学校水、环境学生状况明显改善;学生健康知识知晓率和健康行为持有率提高,干预前后差异有统计学意义;肠道寄生虫感染率由20.0％下降到13.3％;贫血、消瘦和生长发育迟缓患病率分别由17.7％、23.2％及 28.6％下降到5.8％、11.6％和20.0％,干预前后差异有统计学意义.结论 综合干预可以有效改善贫困地区农村小学校环境卫生状况和提高学生健康水平,应积极予以推广.     

Influence of Maternal Exposure to Mass Media on Growth Stunting Among Children Under Five: Mediation Analysis Through the Water,Sanitation, and Hygiene Program

BackgroundThe issue of malnutrition in the Democratic Republic of Congo is severe. Meanwhile, the Water, Sanitation, and Hygiene program has been demonstrated to be effective in reducing the rates of growth stunting among children.ObjectiveWe aimed to explore the association between maternal exposure to mass media and stunting in children through water, sanitation, and hygiene behaviors.MethodsMediation analysis was conducted using data from the 2018 Multiple Indicators Cluster Surveys.ResultsMothers’ exposures to television and the internet in the Democratic Republic of Congo significantly decreases the risk of stunting in children by 5% and 10%, respectively, mediated by household water, sanitation, and hygiene facilities and practices.ConclusionsThese findings could inform interventions and policies to reduce the rate of stunting rate children by promoting water, sanitation, and hygiene through mass media, especially through the internet and television.     

Improving the roles of rural women in health and environmental issues

Safe water supply, sanitation facilities and safe environments are the priorities of the communities in the villages of Upper Egypt. However, personal hygienic behaviors need improvement for substantial promotion of family health. This cannot be met without the full participation of women in their various roles in their communities. Accordingly, 375 females belonging to rural villages of Egypt (VHVs) volunteered to have a role in health and sanitation aspects and disseminate hygienic messages to their communities. The objective of this study was to assess and upgrade the levels of awareness, attitude and practice of VHVs towards environmental sanitation, sanitary housing, personal hygiene, safe water, food safety, sanitary sewage and refuse disposals. Implementation of environmental health education courses resulted in significant improvement of VHVs' awareness, attitude and practice towards the majority of the environmental topics that were addressed. Similar extensive courses are recommended for the promotion of environmental sanitation in other communities.     

Bacteriological and physicochemical quality of drinking water and hygiene-sanitation practices of the consumers in bahir dar city, ethiopia

Background

Lack of safe drinking water, basic sanitation, and hygienic practices are associated with high morbidity and mortality from excreta related diseases. The aims of this study were to determine the bacteriological and physico-chemical quality of drinking water and investigate the hygiene and sanitation practices of the consumers in Bahir Dar City, Ethiopia.

Methods

A cross sectional prospective study was conducted in Bahir Dar City from October–December, 2009. Water samples were collected from 35 private taps and 35 household water containers for bacteriological analysis. The turbidity, pH, temperature and turbidity were measured immediately after collection. Finally, the hygiene-sanitation practices of the consumers were surveyed using interview.

Results

Twenty seven (77.1%) of the household water samples had high total coliforms counts. Twenty (57.1%) household water samples and 9 (25.7%) of the tap water samples had no residual free chlorine. Sixteen (45.7%) household water samples had very high risk score to thermotolerant coliforms. Eight (22.9%) tap water samples had low risk score for total coliforms whereas 21(60%) tap water had very low risk score for thermotolerant coliforms. Twelve (34.3%) of the consumers collect water without contact with their hand and 9(25.7%) wash their hands with soap after visiting toilet.

Conclusion

Water supplies at tap and household water containers were contaminated with bacteria. Poor sanitation, low level of hygiene, uncontrolled treatment parameters are the causes for contamination. Control of physico-chemical parameters and promoting good hygiene and sanitation are recommended.     

The prominence of health in donor policy for water supply and sanitation: a review

Improved water supply, sanitation and hygiene used in combination are effective at achieving better health for poor people in developing countries. However, donor policy has been dominated by interventions in water supply, at the expense of achieving the potential health benefits of improved sanitation and hygiene. Commitments recently made by the international community require greater emphasis on improved sanitation and hygiene and their impacts on health. This review assesses whether such a shift in emphasis is apparent in donor policy. It examines the prominence given to achieving better health in water supply and sanitation policies of three donors: the World Bank, the European Union and the Department for International Development of the British Government. It finds that health benefits are explicit and integral in recently updated policy documentation concerning water supply and sanitation. This has taken place in an environment focused on poverty reduction and demand-led, financially sustainable interventions. Mechanisms that have enabled donors to prioritise the health impacts in this environment are discussed, including adoption of an asset-based conceptualisation of poverty and a cross-sectoral approach.     

Regional disparities in the burden of disease attributable to unsafe water and poor sanitation in China

Objective

To estimate the disease burden attributable to unsafe water and poor sanitation and hygiene in China, to identify high-burden groups and to inform improvement measures.

Methods

The disease burden attributable to unsafe water and poor sanitation and hygiene in China was estimated for diseases resulting from exposure to biologically contaminated soil and water (diarrhoeal disease, helminthiases and schistosomiasis) and vector transmission resulting from inadequate management of water resources (malaria, dengue and Japanese encephalitis). The data were obtained from China’s national infectious disease reporting system, national helminthiasis surveys and national water and sanitation surveys. The fraction of each health condition attributable to unsafe water and poor sanitation and hygiene in China was estimated from data in the Chinese and international literature.

Findings

In 2008, 327 million people in China lacked access to piped drinking water and 535 million lacked access to improved sanitation. The same year, unsafe water and poor sanitation and hygiene accounted for 2.81 million disability-adjusted life years (DALYs) and 62 800 deaths in the country, and 83% of the attributable burden was found in children less than 5 years old. Per capita DALYs increased along an east–west gradient, with the highest burden in inland provinces having the lowest income per capita.

Conclusion

Despite remarkable progress, China still needs to conduct infrastructural improvement projects targeting provinces that have experienced slower economic development. Improved monitoring, increased regulatory oversight and more government transparency are needed to better estimate the effects of microbiologically and chemically contaminated water and poor sanitation and hygiene on human health.     

Monitoring drinking water,sanitation, and hygiene in non-household settings: Priorities for policy and practice

Inadequate drinking water, sanitation, and hygiene (WaSH) in non-household settings, such as schools, health care facilities, and workplaces impacts the health, education, welfare, and productivity of populations, particularly in low and middle-income countries. There is limited knowledge on the status of WaSH in such settings. To address this gap, we reviewed international standards, international and national actors, and monitoring initiatives; developed the first typology of non-household settings; and assessed the viability of monitoring. Based on setting characteristics, non-household settings include six types: schools, health care facilities, workplaces, temporary use settings, mass gatherings, and dislocated populations. To-date national governments and international actors have focused monitoring of non-household settings on schools and health care facilities with comparatively little attention given to other settings such as workplaces and markets. Nationally representative facility surveys and national management information systems are the primary monitoring mechanisms. Data suggest that WaSH coverage is generally poor and often lower than in corresponding household settings. Definitions, indicators, and data sources are underdeveloped and not always comparable between countries. While not all countries monitor non-household settings, examples are available from countries on most continents suggesting that systematic monitoring is achievable. Monitoring WaSH in schools and health care facilities is most viable. Monitoring WaSH in other non-household settings would be viable with: technical support from local and national actors in addition to international organizations such as WHO and UNICEF; national prioritization through policy and financing; and including WaSH indicators into monitoring initiatives to improve cost-effectiveness. International consultations on targets and indicators for global monitoring of WaSH post-2015 identified non-household settings as a priority. National and international monitoring systems will be important to better understand status, trends, to identify priorities and target resources accordingly, and to improve accountability for progressive improvements in WaSH in non-household settings.     

Water,sanitation, and hygiene in schools: Status and implications of low coverage in Ethiopia,Kenya, Mozambique,Rwanda, Uganda,and Zambia

Adequate access to water, sanitation, and hygiene (WaSH) in schools impacts health, educational outcomes, and gender disparities. Little multi-country research has been published on WaSH in rural schools in Sub-Saharan Africa. In this multi-national cross-sectional WaSH study, we document WaSH access, continuity, quality, quantity, and reliability in 2270 schools that were randomly sampled in rural regions of six Sub-Saharan African countries: Ethiopia, Kenya, Mozambique, Rwanda, Uganda, and Zambia. Data collection included: school WaSH surveys containing internationally established WaSH indicators, direct observation, and field- and laboratory-based microbiological water quality testing. We found 1% of rural schools in Ethiopia and Mozambique to 23% of rural schools in Rwanda had improved water sources on premises, improved sanitation, and water and soap for handwashing. Fewer than 23% of rural schools in the six countries studied met the World Health Organization’s recommended student-to-latrine ratios for boys and for girls. Fewer than 20% were observed to have at least four of five recommended menstrual hygiene services (separate-sex latrines with doors and locks, water for use, waste bin). The low access to safe and adequate WaSH services in rural schools suggest opportunities for WaSH interventions that could have substantive impact on health, education, and gender disparities.     

Availability of data for monitoring noncommunicable disease risk factors in India

Objective

To examine the availability of data measuring noncommunicable disease (NCD) risk factor indicators from household surveys conducted in India from 2000 to 2009.

Methods

Questionnaires and publications used in household surveys were identified through internet and PubMed searches and examined to determine which core NCD risk factor indicators recommended by the World Health Organization (WHO) for NCD monitoring were being measured. Surveys with a sample size of 5000 or more were included to ensure a certain level of precision. The completeness of core indicator measurement and the geographical representativeness of the surveys were assessed.

Findings

Twenty six surveys met the inclusion criteria. Among the WHO-recommended core behavioural risk factor indicators, those monitoring tobacco use were measured completely in national and subnational surveys; those assessing dietary intake and physical inactivity were measured only in subnational surveys, and those assessing alcohol use were not measured at all. Among WHO-recommended core biological risk factors, only body mass index was measured in national and subnational surveys, whereas blood pressure, fasting blood glucose and blood cholesterol were measured only in subnational surveys. Due to the use of non-standard indicator definitions, measurement of core indicators in some of the national and subnational surveys was incomplete.

Conclusion

The availability of data on core risk factor indicators to monitor the increasing burden of NCDs is inadequate in India. These indicators using standardized definitions should be included in the periodic national household health surveys to provide data at the national and disaggregated levels.     

Implementing hygiene monitoring systems in hospital laundries in order to reduce microbial contamination of hospital textiles

As textiles sent to hospital laundries contain many types of pathogenic organisms, it is important that laundering not only has an appropriate cleaning effect but also has a satisfactory disinfecting effect. Critical to this process is the maintenance of an appropriate hygiene level in the clean area of laundries in order to prevent recontamination of textiles from manual handling when ironing, folding, packing etc. The aims of this study were to evaluate the hygienic state of a hospital laundry, to introduce continuous sanitary measures, and to introduce a continuous hygiene monitoring system with an infection control programme. Two systems for evaluating hospital laundry hygiene were combined: HACCP principles (hazard analysis and critical control points) and RAL-GZ 992 standards (quality assurance standard for textile care of hospital laundry). Evaluation of the hygienic state of the hospital laundry was carried out by evaluating the number and types of micro-organisms present at the critical control points throughout the whole laundering process, using RODAC agar plates for surface sampling and the pour plate method for investigating water samples. The initial examination showed that the sanitary condition of the laundry did not reach the required hygiene level. Therefore, fundamental sanitation measures were instituted and the examination was repeated. Results were then satisfactory. The most important critical control point was the chemothermal laundering efficiency of the laundering process. To prevent micro-organisms spreading into the entire clean working area, it is important that, in addition to regular sanitary measures such as cleaning/disinfecting all working areas, technical equipment and storage shelves etc., regular education sessions for laundry employees on proper hand hygiene is undertaken and effective separation of the clean and dirty working areas is achieved.