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Full-Text Articles in Pharmacology, Toxicology and Environmental Health
Surveillance Of Rnase P, Pmmov, And Crassphage In Wastewater As Indicators Of Human Fecal Concentration Across Urban Sewer Neighborhoods, Louisville, Kentucky, R. H. Holm, M. Nagarkar, R. A. Yeager, D. Talley, A. C. Chaney, J. P. Rai, A. Mukherjee, S. N. Rai, A. Bhatnagar, T. Smith
Surveillance Of Rnase P, Pmmov, And Crassphage In Wastewater As Indicators Of Human Fecal Concentration Across Urban Sewer Neighborhoods, Louisville, Kentucky, R. H. Holm, M. Nagarkar, R. A. Yeager, D. Talley, A. C. Chaney, J. P. Rai, A. Mukherjee, S. N. Rai, A. Bhatnagar, T. Smith
Faculty Scholarship
Wastewater surveillance has been widely used as a supplemental method to track the community infection levels of severe acute respiratory syndrome coronavirus 2. A gap exists in standardized reporting for fecal indicator concentrations, which can be used to calibrate the primary outcome concentrations from wastewater monitoring for use in epidemiological models. To address this, measurements of fecal indicator concentration among wastewater samples collected from sewers and treatment centers in four counties of Kentucky (N = 650) were examined. Results from the untransformed wastewater data over 4 months of sampling indicated that the fecal indicator concentration of human ribonuclease P (RNase …
Geographic And Occupational Mobility Of Small-Scale Fishers Of Lake Malawi: An Exploratory Study Of Water, Sanitation, And Hygiene Access, Malawi, Rochelle H. Holm, Tikhala Chakalamba, Bwighane Ngasama, Fanuel Kapute
Geographic And Occupational Mobility Of Small-Scale Fishers Of Lake Malawi: An Exploratory Study Of Water, Sanitation, And Hygiene Access, Malawi, Rochelle H. Holm, Tikhala Chakalamba, Bwighane Ngasama, Fanuel Kapute
Faculty Scholarship
The livelihood of small-scale fishers on the world’s freshwater lakes cuts across the Sustainable Development Goal (SDG) 6, which covers water and sanitation, and SDG 8 on economic growth. The aim of this study was to examine the nature and extent of fishers’ mobility patterns and access to improved sanitation facilities, safe drinking water, and handwashing practices while at work and home for two fishing camps in Malawi. The study used key informant interviews, questionnaires, water quality testing, and an observational checklist, followed by interviews on fishers’ occupational migration. Many fishers (85%; 51/60) live and work in fishing camps with …
A Review Of The Financial Value Of Faecal Sludge Reuse In Low-Income Countries, Adrian Mallory, Rochelle Holm, Alison Parker
A Review Of The Financial Value Of Faecal Sludge Reuse In Low-Income Countries, Adrian Mallory, Rochelle Holm, Alison Parker
Faculty Scholarship
Faecal sludge reuse could promote responsible waste management and alleviate resource shortages. However, for this reuse to be carried out at scale, it needs to be financially viable. This paper reviews the financial values of resource recovery from 112 data points from 43 publications from academic and grey literature. The results found 65% of the existing literature is projected rather than being based on observed data from products in practice, with limited studies providing actual experiences of revenue in practice. Some of the estimates of the potential value were ten times those observed in data from operating businesses. Reasons for …
Food Safety Policies And Practices In Public Spaces: The Urban Water, Sanitation, And Hygiene Environment For Fresh Fish Sold From Individual Vendors In Mzuzu, Malawi, Jazimoni Lazaro, Fanuel Kapute, Rochelle H. Holm
Food Safety Policies And Practices In Public Spaces: The Urban Water, Sanitation, And Hygiene Environment For Fresh Fish Sold From Individual Vendors In Mzuzu, Malawi, Jazimoni Lazaro, Fanuel Kapute, Rochelle H. Holm
Faculty Scholarship
In sub-Saharan Africa, informal markets account for more than 80% of the total food selling. Fish is a major protein source for households in Malawi and is commonly purchased from individual vendors. The aim of this study was to review national acts and policies and local regulations focused on fresh fish sold at open-air markets or by mobile vendors and to further examine the water, sanitation, and hygiene environment that may impact food safety in Mzuzu City, Malawi. The study used interviews, an observational checklist, and sampling of water and fish skin. In general, there was limited oversight of food …
Can A Precast Pit Latrine Concrete Floor Withstand Emptying Operations? An Investigation From Malawi, Joshua Mchenga, Rochelle H. Holm
Can A Precast Pit Latrine Concrete Floor Withstand Emptying Operations? An Investigation From Malawi, Joshua Mchenga, Rochelle H. Holm
Faculty Scholarship
For fecal sludge from households in low- and middle-income countries to be treated offsite it needs to be removed, which can be greatly affected by the pit latrine floor design. However, it is unclear whether precast pit latrine concrete floors (latrine slabs) can withstand emptiers and their equipment. To investigate this issue, 28 prefabricated latrine slabs were purchased in two cities of Malawi. They were first visually evaluated, and then their compression strength was tested. Additionally, each seller was asked a series of questions to better understand their business, training, and construction practices. Results showed that households should perform due …
Pit Latrine Fecal Sludge Resistance Using A Dynamic Cone Penetrometer In Low Income Areas In Mzuzu City, Malawi, Charles F.C. Chirwa, Ralph P. Hall, Leigh Anne H. Krometis, Eric A. Vance, Adam Edwards, Ting Guan, Rochelle H. Holm
Pit Latrine Fecal Sludge Resistance Using A Dynamic Cone Penetrometer In Low Income Areas In Mzuzu City, Malawi, Charles F.C. Chirwa, Ralph P. Hall, Leigh Anne H. Krometis, Eric A. Vance, Adam Edwards, Ting Guan, Rochelle H. Holm
Faculty Scholarship
Pit latrines can provide improved household sanitation, but without effective and inexpensive emptying options, they are often abandoned once full and may pose a public health threat. Emptying techniques can be difficult, as the sludge contents of each pit latrine are different. The design of effective emptying techniques (e.g., pumps) is limited by a lack of data characterizing typical in situ latrine sludge resistance. This investigation aimed to better understand the community education and technical engineering needs necessary to improve pit latrine management. In low income areas within Mzuzu city, Malawi, 300 pit latrines from three distinct areas were assessed …
Adopters And Non-Adopters Of Low-Cost Household Latrines: A Study Of Corbelled Pit Latrines In 15 Districts Of Malawi, Rochelle Holm, Mavuto Tembo, Dalo Njera, Victor Kasulo, Mphatso Malota, Willy Chipeta, Wales Singini, Joshua Mchenga
Adopters And Non-Adopters Of Low-Cost Household Latrines: A Study Of Corbelled Pit Latrines In 15 Districts Of Malawi, Rochelle Holm, Mavuto Tembo, Dalo Njera, Victor Kasulo, Mphatso Malota, Willy Chipeta, Wales Singini, Joshua Mchenga
Faculty Scholarship
The Sustainable Development Goals will challenge low- and middle-income settings to look at new approaches for rural sanitation. In 2013, Mzuzu University, in partnership with United Nations Children's Fund (UNICEF) Malawi, started a low-cost latrine program in rural areas using the corbelled latrine design supported by locally owned sustainable businesses. The objective of this work was to trace customers (early household adopters) and non-customers through field observations and interviews in 15 districts of Malawi. The research team spent 193 personnel work days in data collection and found 21 households as adopters in 7 districts. Most respondents had a preference with …
A Comparative Study Of Faecal Sludge Management In Malawi And Zambia: Status, Challenges And Opportunities In Pit Latrine Emptying, Rochelle Holm, James Madalitso Tembo, Bernard Thole
A Comparative Study Of Faecal Sludge Management In Malawi And Zambia: Status, Challenges And Opportunities In Pit Latrine Emptying, Rochelle Holm, James Madalitso Tembo, Bernard Thole
Faculty Scholarship
This review paper covers the issues of pit latrine emptying national policies and regulations with a focus on Malawi and Zambia. With 2.4 billion people worldwide still lacking improved sanitation facilities, developing countries need to look at policy, regulation and practice for household sanitation service provision with a new lens. What happens “next,” when improved sanitation facilities eventually become full? An emphasis on faecal sludge management has multiplied this important issue in the past few years. The authors compare the pit latrine emptying situation in Malawi and Zambia with a focus on status, challenges and opportunities. To build this comparison, …