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PubMed2006

Tropical enteropathy protects against Western diseases in environments of poor sanitation.

This hypothesis suggests that tropical enteropathy protects against Western diseases in environments of poor sanitation, and that the absence of tropical enteropathy contributes to the increased incidence of Western diseases in settings of improved sanitation. The hypothesis is supported by four observations: (1) The prevalence of tropical enteropathy is inversely related to the incidence of Western diseases, (2) The bowel is a major immune and neuroendocrine organ, and inflammation of the gut results in profound local and systemic changes, (3) Tropical enteropathy can account for the subtle clinical differences observed between individuals living in third world environments and industrialized societies, and (4) The concept that tropical enteropathy protects against Western diseases in environments of poor sanitation is consistent with the observations upon which the "Hygiene and Fetal Origins Hypotheses" are based. Identifying tropical enteropathy as a mechanism that protects against Western diseases in environments of poor sanitation creates a new testable hypothesis for some of the most common non-communicable diseases of industrialized societies.

Developed Countries↗
PubMed1997

Integrating Hazard Analysis and Critical Control Point (HACCP) and sanitation for verifiable food safety.

Reliable, verifiable food safety requires the application of technologically correct methods in a systematic way. This requires making a distinction between sanitation and Hazard Analysis and Critical Control Point (HACCP) and integrating these two systems into one food safety system. Although sanitation and HACCP share the same goal of producing safe food products, the focus of sanitation is on the environment surrounding the food to prevent contamination, whereas the focus of HACCP is on controlling hazards intrinsic to food materials. Together they provide the organizational base for applying the correct methods and procedures to ensure and verify that food served is safe for foodservice clients. These approaches also provide records that demonstrate that food safety measures have been planned and completed as planned. One way to demonstrate a responsible approach to food safety is to understand the differences between sanitation and HACCP and to build approaches to food safety that use both of these systems. The resulting integrated system has a better chance of controlling all the hazards than either system by itself.

Cooking↗
PubMed2003

Home hygiene and environmental sanitation: a country situation analysis for India.

Problems of the environment and of domestic hygiene are always related to poverty of population and the sanitation of settlements. Most cities and towns in developing countries, like India, are characterised by over-crowding, congestion, inadequate water supply and inadequate facilities of disposal of human excreta, waste water and solid wastes. Inadequacy of housing for most urban poor invariably leads to poor home hygiene. Personal and domestic hygiene practices cannot be improved without improving basic amenities, such as water supply, waste water disposal, solid waste management and the problems of human settlements. But even under the prevailing conditions, there is significant scope of improving hygiene practices at home to prevent infection and cross-infection. Unfortunately, in developing countries, public health concerns are usually raised on the institutional setting, such as municipal services, hospitals, environmental sanitation, etc. There is a reluctance to acknowledge the home as a setting of equal importance along with the public institutions in the chain of disease transmission in the community. Managers of home hygiene and community hygiene must act in unison to optimise return from efforts to promote public health. Current practices and perceptions of domestic and personal hygiene in Indian communities, the existing levels of environmental and peri-domestic sanitation and the 'health risk' these pose will be outlined, as well as the need for an integrated action for improving hygiene behaviour and access to safe water and sanitation.

Developing Countries↗
PubMed2003

Myanmar experiences in sanitation and hygiene promotion: lessons learned and future directions.

Recent activities in connection with the National Sanitation Week (NSW) and Social Mobilisation for Sanitation and Hygiene have contributed to a significant increase in access to sanitary means of excreta disposal, from 45% in 1997 to 67% in 2001. Handwashing with soap and water after defecation has also increased from 18% in 1996 to 43% in 2001. Success is attributable to high level political commitment, state or division level action and community mobilisation by village level authorities. Multi-level efforts such as mass media, planning workshops, training sessions and house-to-house visits by village authorities and health officials have raised greater awareness of sanitation and hygiene issues and led to construction of latrines on a self-help basis. The challenge ahead is to give greater attention to the 'hard to reach' who live in less accessible areas and are more resistant to change. The 2002 NSW has accordingly given special emphasis to activities in 73 of 324 townships where 50% or more of the households have no access to a sanitary latrine. The communication and social mobilisation package has been improved to upgrading unsanitary latrines and integrating handwashing more systematically with promotion of sanitary latrines. Programmatic follow-up to the NSW is being provided in selected townships through more intensive social mobilisation for 'hard to reach' households and activity-based school sanitation and hygiene education. This approach will contribute further towards improved hygienic practices and reduce diarrhoeal morbidity and mortality.

Communicable Disease Control↗
PubMed1996

Scheduled sanitation to reduce stable fly (Diptera: Muscidae) populations in beef cattle feedlots.

Sanitation has been long recommended as a means of reducing stable fly, Stomoxys calcitrans (L.), populations at cattle feedlots, but there is little published research to support this recommendation. In each of the 2 yr of this study, 4 feedlots received complete sanitation and 4 feedlots received no cleaning. The objective was to have the initial cleaning done before 1 June and then to reclean as needed every 2 wk thereafter. The feedlots that were cleaned had significantly fewer flies than the uncleaned feedlots, with 50.9% fewer stable flies during the 1st yr and 36.2% fewer flies in the 2nd yr. These reductions were realized even though initial cleaning was not done by 1 June in either year: bad weather delayed completion until 20 June the 1st yr and 29 June the 2nd yr. Sanitation at cattle feedlots significantly reduces stable fly populations and sanitation may have been more effective if initial cleaning was done by 1 June.

Animals↗
PubMed1984

Environmental factors in the relationship between breastfeeding and infant mortality: the role of sanitation and water in Malaysia.

Mothers' recall data collected in Malaysia in 1976-1977 are analyzed to study correlates of mortality of 5471 infants. Respondent population is 1262 women living in 52 primary sampling units of Peninsular Malaysia. Lengths of unsupplemented and supplemented breastfeeding and presence of piped household water and toilet sanitation are related to infant mortality in regressions that also control other correlates. The analysis is disaggregated into three periods of infancy. Through six months of feeding, unsupplemented breastfeeding is more strongly associated with fewer infant deaths than is supplemented breastfeeding. Type of sanitation is generally more strongly associated with mortality than is type of water supply. The effects of breastfeeding and the environmental variables are shown to be strongly interactive and to change systematically during the course of infancy. Breastfeeding is more strongly associated with infant survival in homes without piped water or toilet sanitation. In homes with both modern facilities, supplemented breastfeeding has no significant effect, and unsupplemented breastfeeding is statistically significant only for mortality in days 8-28. Presence of modern water and sanitation systems appears unimportant for mortality of infants who are breastfed without supplementation for six months.

Breast Feeding↗
PubMed2004

Water supply and sanitation in remote indigenous communities--priorities for health development.

OBJECTIVE: To review available national and State/Territory survey data on water supply and sanitation in remote Indigenous Australian communities and to discuss the findings in terms of priorities for health and infrastructure development. METHODS: Descriptive analysis of data on relevant variables from available data sources. RESULTS: All relevant published reports arose from only two data sources: the Community Housing and Infrastructure Needs Surveys, and from a Northern Territory-wide survey of community-owned dwellings. The data show that many communities do not have a reliable water supply and experience frequent and prolonged breakdown in sewerage systems. For example, 12% of communities of 50 people or more experienced five or more periods of water restrictions in a one-year period, and 10% of communities experienced sewage overflow or leakage 20 or more times in a one-year period. Items of basic household infrastructure regarded as essential for household hygiene are missing or not functional in many community-owned dwellings. For example, in about one-third of houses bathroom taps and toilet drainage required major repairs. CONCLUSION AND IMPLICATIONS: Given the widely accepted importance of water and sanitation to health, the data support the contention that poor environmental conditions are a major cause of poor health in remote communities and provide some measure at a national level of the magnitude of the problem. Action to ensure easy access to adequate quantities of water and secure sanitation should receive greater priority. There is need for better quality information systems to monitor progress, equity and accountability in the delivery of water and sanitation services.

Australia↗
PubMed2004

Health promotion and disease prevention through sanitation education in South African Zulu and Xhosa women.

Poor sanitation and hygiene facilitate transmission of environmental diseases and pose a threat to the health of South African residents. This study focused on identifying sanitation needs from the perspective of informal community residents, addressing need related issues, and empowering Zulu and Xhosa women. The study used a multistep approach to identify and access communities of interest, reflexive critique during data collection from 300 heads of households, and a reiterative process to identify major themes. A process, which impacted 1,467 residents, was developed; it included culturally sensitive presentation styles and educational materials that facilitated understanding of sanitation concepts. Main sanitation themes were health knowledge and community role models. Educational sessions incorporated women. Using women as educators elevated their status and validated their community importance. Project participation added to the educational background of the Zulu and Xhosa women. It empowered them and provided an opportunity for them to articulate community needs.

Adult↗
PubMedDate not supplied

Diseases associated with poor water and sanitation: hazards, prevention, and solutions.

This paper examines one of the most staggering challenges facing the mankind, the challenge to conquer diseases associated with poor water and sanitation. Although rapid strides have been made in the last decade of the last century to provide improved water supply and sanitation, the world is still rampant with diseases. More than 1.1 billion individuals lack access to improved water supply and 2.4 billion lack access to improved sanitation in a world that boasts of human rights and sustainable development. The paper details the various types of diseases associated with water and suggests preventions and solution and also examines international development targets and the number of likely deaths from diseases associated with water. Even if the set targets are met successfully, an estimated 40 to 58 million lives would still be lost by the target year of 2015, while the massive efforts of international agencies and governments would be able to salvage an estimated 15 to 22 million lives. The threat of diseases associated with poor water qualities and services makes a fitting case for world resources, finances, and expertise to be focused and diverted to the Water and Sanitation (WATSAN) sector on an unprecedented scale and at a much higher pace than that envisaged in the targets to avoid the large scale death and misery.

Bacterial Infections↗
PubMed1985

A priority system model for sanitation management in food service establishments.

We set out to develop a sanitation management scheme that will enable health regulatory authorities to utilize available personnel more efficiently in the regulation of the food service industry given the current budgetary and manpower constraints. Previous analyses of the Annual Food Service Establishment Sanitation Inspection Summary records from a large County Department of Health for fiscal years 1979, 1980, and 1981 indicated a cut-off point at about two to four visits for a productive follow-up sanitation inspection of food service establishments. Revisits after this point seemed counter-productive. Revisits of up to 13 times in some establishments and a high uninspection rate of others were noted. The above data, the population at risk for each establishment (generated by a prescribed method), and various control criteria were integrated into the model. Application of the model to a sample of 82 food service establishments was successful in ensuring that those operations that pose high risk to patrons are given priority in a sanitation management program while also facilitating the inspection of all food service establishments within a jurisdiction at some point.

Food Services↗
PubMed1996

Effect of hatching cabinet sanitation treatments on Salmonella cross-contamination and hatchability of broiler eggs.

Four trials were conducted to evaluate the efficacy of hatcher air sanitation utilizing ultraviolet light (UV), ozone, or hydrogen peroxide on bacterial populations, the spread of Salmonella, and hatchability of broiler eggs. The UV light (254 nm, 146 mu W/s) and ozone (0.2 or 0.4 ppm) treatments were continuously applied through the last 3 d of hatch, the hydrogen peroxide treatment (2.5%) was administered 1 or 2 min of each 10 min at rates of 500 or 100 mL/h. Hatchability was not significantly reduced by sanitizing treatments when compared with the untreated control (94 vs 95.6%). As compared to controls, all sanitizing treatments reduced 75 to 99% of the total bacteria, Enterobacteriaceae, and Salmonella in the hatching cabinet air samples. The use of hydrogen peroxide resulted in greater reduction of bacteria than ozone or UV light. Only hydrogen peroxide significantly reduced Salmonella levels on eggshell fragments. Significant reductions in the number of Salmonella-positive chicks occurred using the ozone and hydrogen peroxide treatments. Hydrogen peroxide significantly reduced the magnitude of Salmonella colonization in chicken ceca. These trials demonstrated that the spread of bacteria can be effectively reduced in the hatching cabinet by air sanitization using UV light, ozone, and hydrogen peroxide. The potential to reduce bacterial cross contamination in the hatcher is achievable without depressing hatchability.

Air Pollution, Indoor↗
PubMed1998

Rapid monitoring method to assess efficacy of sanitizers against Pseudomonas putida biofilms.

Biofilms of luminescent Pseudomonas putida were developed on rubber surfaces by incubation in brain heart infusion (BHI) broth. Scanning electron microscopy (SEM) and epifluorescence microscopy (EFM) were used to examine biofilm formation. To test the efficacy of two sanitizers commonly employed in dairy plants for CIP (cleaning in place) procedures, a novel bioluminescence method and aerobic plating were used to enumerate cells. Immediately after the sanitizer treatments an apparent 5-log reduction of biofilm-associated cells was determined. However, when the samples were resuscitated for 18 h in BHI broth, high numbers of cells were detected which reached levels close to those of nontreated controls. The results demonstrated that neither sanitizer could completely eliminate biofilm-associated P. putida. The microbial bioluminescence method proved to be the best way for assessing effectiveness of sanitizers against microbial biofilms.

Biofilms↗
PubMed2002

Efficacy of sanitation and cleaning methods in a small apple cider mill.

The efficacy of cleaning and sanitation in a small apple cider processing plant was evaluated by surface swab methods as well as microbiological examination of incoming raw ingredients and of the final product. Surface swabs revealed that hard-to-clean areas such as apple mills or tubing for pomace and juice transfer may continue to harbor contaminants even after cleaning and sanitation. Use of poor quality ingredients and poor sanitation led to an increase of approximately 2 logs in aerobic plate counts of the final product. Reuse of uncleaned press cloths contributed to increased microbiological counts in the finished juice. Finally, using apples inoculated with Escherichia coli K-12 in the plant resulted in an established population within the plant that was not removed during normal cleaning and sanitation. The data presented in this study suggest that current sanitary practices within a typical small cider facility are insufficient to remove potential pathogens.

Anti-Bacterial Agents↗
PubMed2000

Sanitation without pollution.

The most effective way of protecting drinking water resources from domestic sewage is to use technologies that do not produce sewage. This paper gives an overview of emerging alternatives in the form of ecological sanitation systems for urban and peri-urban areas. A key feature of ecological sanitation is that it regards human excreta as a resource to be recycled rather than as waste to be disposed of. Examples given include ecological sanitation systems based on dehydration and decomposition from Mexico, El Salvador, Sweden, India and Vietnam. These systems need neither water for flushing, nor pipelines for transport, nor treatment plants and arrangements for the disposal of toxic sludge. Large scale application of ecological sanitation would lead to less environmental pollution, reduced water consumption, considerable savings on sewers and treatment plants and increased employment. In addition it would provide valuable resources for food production and wasteland development.

Conservation of Natural Resources↗
PubMed2003

Evaluation of a water, sanitation, and hygiene education intervention on diarrhoea in northern Pakistan.

OBJECTIVE: Inadequate water and sanitation services adversely affect the health and socioeconomic development of communities. The Water and Sanitation Extension Programme (WASEP) project, undertaken in selected villages in northern Pakistan between 1997 and 2001, was designed to deliver an integrated package of activities to improve potable water supply at village and household levels, sanitation facilities and their use, and awareness and practices about hygiene behaviour. METHODS: A case-control study was conducted during July-September 2001 to evaluate whether, after selected confounders were controlled for, children aged <6 years with diarrhoea were more or less likely to reside in villages that participated in the project than in villages that did not participate. Descriptive and logistic regression analyses were performed. FINDINGS: Children not living in WASEP villages had a 33% higher adjusted odds ratio for having diarrhoea than children living in WASEP villages (adjusted odds ratio, 1.331; P<0.049). Boys had 25% lower odds of having diarrhoea than girls (adjusted odds ratio, 0.748; P<0.049). A 2.6% decrease was found in the odds of diarrhoea for every yearly increase in the mother's age (adjusted odds ratio, 0.974; P<0.044) and a 1.4% decrease for every monthly increase in the child's age (adjusted odds ratio, 0.986; P<0.001). CONCLUSIONS: The findings in this study may help refine the approach to future water, sanitation, and hygiene initiatives in northern Pakistan. The integrated approach taken by WASEP, which incorporates engineering solutions with appropriate education to maximize facility usage and improve hygiene practices, is a useful example of how desired health benefits can be obtained from projects of this type.

Adolescent↗
PubMed1978

Sanitation norms in rural areas: a cross-cultural comparison.

Mortality rates have sharply decreased throughout the world in the twentieth century. While the communicable diseases that had been the principal killers of mankind have been largely brought under control, the enteric and other diseases, which are directly related to sanitation practices, have not been affected. Improvement in health status in the developing nations, especially in isolated rural areas, will hinge on changes in sanitation norms. Modification of these norms must be based on an awareness of what they are and of the values that are associated with them. Sanitation norms in rural areas of three countries--in the southeastern United States, Puerto Rico, and the Dominican Republic--are reviewed on the basis of a study in which essentially the same survey instrument was used in the three samples. Sanitation norms relating to the source of water and storage for household use are compared, as are personal hygiene practices and patterns for the disposal of liquid wastes, garbage, and other solid wastes. Selected attitudinal values are also examined.

Attitude↗
PubMed1981

Effect of investments in water supply and sanitation on health status: a threshold-saturation theory.

A general theory on the relationship between water supply and sanitation investments and health, the threshold-saturation theory, is proposed. The theory takes into consideration three variables: health status, socioeconomic status, and sanitation level, and attempts to encompass, for the first time in one general theoretical framework, numerous conflicting empirical findings. The two-tiered S-shaped logistic form of the relationship that is proposed assumes that at the lower end of the socioeconomic spectrum there is a threshold below which investments in community water supplies and/or excreta disposal facilities alone result in little detectable improvement in health status. Similarly, at the higher end of the socioeconomic scale, it is suggested that a point of saturation is reached beyond which further significant health benefits cannot be obtained by investments in conventional community sanitation facilities.A preliminary attempt to validate this model using published data on sanitation level (defined as access to water supply), life expectancy, and adult literacy rates, for 65 developing countries, appears to provide preliminary support for the threshold saturation theory but further empirical validation is required before a quantitative predictive model can be developed.

Developing Countries↗
PubMed1984

Sanitization of dentures by several denture hygiene methods.

Denture sanitization is an important element in the treatment of denture stomatitis and should be emphasized in instructions to patients. A two-part study was designed to compare the efficacy of eight denture-cleaning methods in removing and/or killing aerobes, anaerobes, and yeasts on dentures. Part I tested the effectiveness of the cleaners on a pure yeast culture of C. albicans. Part II tested the various denture sanitization techniques under actual clinical conditions. The following conclusions were made from the information obtained in this study: Miller's and Kleenite were the most effective sanitizing agents. Brushing the denture with soap and water and soaking the denture in the cleaner Mersene were effective to a lesser degree. Although Clorox and Calgon was effective at killing yeast under in vitro conditions, it was not effective under clinical conditions. The other denture cleaners were not found to be effective under the clinical conditions of this study for the removal and/or killing of any of the three microorganism groups cultured. In the past, the function of denture cleaners has been to remove deposits and stains from dentures. With the present knowledge of the role of microorganisms in the etiology of denture stomatitis, more emphasis should be placed on the ability of denture cleaners to sanitize dentures.

Acrylic Resins↗