Health
Awareness of occupational biohazards & utilization of PPE among sanitation workers in fecal waste management plants in Uganda
By: Bulafu Douglas, Niyongabo Filimin, James Baguma, Bridget Nagawa Tamale, Namakula Lydia & Lesley Rose Ninsiima
In many Sub-Saharan African countries such as Uganda, rapid urban growth is attributed to increased industrialization, commercialization, employment opportunities, and rural-urban migration. With the current rapid urban population growth of 25%, Uganda is projected to be among the most urbanized countries in Africa by 2050. The growing urban population has led to an increased need for on-site sanitation technologies which require functioning fecal waste management systems and institutions to operate.
A sanitation worker is a person who is responsible for addressing any challenges along the sanitation chain. Sanitation workers are involved in emptying of pits and septic tanks; cleaning toilets, sewers and manholes; and operating pumping stations and treatment plants. Although sanitary workers provide a fundamental environmental health service to society, their occupation exposes them to extreme health and safety hazards including social discrimination and stigma. This study was carried out to establish awareness of occupational biohazard risks and utilization of personal protective equipment among sanitation workers in fecal waste management plants in regional cities in Uganda.
This study involved both quantitative and qualitative methods conducted among 417 sanitation workers in fecal treatment plants in Uganda’s nine regional cities of: Arua in West Nile; Lira and Gulu in northern Uganda; Mbale and Jinja in Eastern Uganda; Masaka and Kampala in central Uganda; and Fort Portal and Mbarara city in western Uganda. In addition, 17 key informant interviews (KIIs) were conducted among key stakeholders such as the officials at the fecal waste management plants, National Water and Sewerage Corporation, Public Health departments in the selected cities, and the Ministry of Health (MOH).
Findings from the study showed that, among the 417 sanitation workers, most (95%) were males, majority (46.5%) were 30 years old and below, and 44.8% had secondary education as their highest level of education. Only 32% of the workers reported to have spent more than 5 years working at the plant, 46% worked for more than the recommended 8 hours shift, and 26% worked in both day and night shifts. Of the different roles played at the treatment plants, 51% were involved in collection, 62% in emptying, 45% in transportation, 22% in treatment, and 32% in disposal of fecal waste. Sanitation workers reported being exposed to various occupational risks that could lead to injuries, illnesses, and death. These risks included exposure to fecal pathogens, strenuous labour, working in confined spaces, exposure to poisonous gases, and the use of hazardous chemicals.
The participants identified fecal waste collection points and points of fecal waste treatment especially at screening level as the most at-risk for occupational hazards for sanitation workers. Participants acknowledged that exposure to occupational hazards increases chances of disease-causing pathogen transmission to the public in addition to causing adverse health outcomes to them. The event of an occupational incident also reduced the productivity, efficiency and effectiveness of plant performance at the sewage treatment plants and the sanitation workers who earn a living on daily basis. One of the officials interviewed was quoted saying “We had a case were two people died in a septic tank. They were trying to empty it and what killed them were the gases inside the septic tank which caused suffocation.”
Although Personal Protective Equipment (PPE) such as gloves, masks, water proof boots, and overalls ought to be provided to employees working in a fecal sludge establishment, about 61% reported that they bought their own, and only 68% said that they always wore the availed PPE when working. However, of the respondents that did not use PPE, 61% said that PPE was not provided to them, and 55% said that PPE was hard to get and expensive to buy.
Results showed that PPE use was 32% higher among workers who had knowledge about any occupational health and safety guidelines related to sanitation work than those who not knowledgeable. At the fecal management plants that reported the presence of occupational health and safety personnel, PPE use was 25% higher than the plants without. The prevalence of PPE use among respondents who reported that it was mandatory to use PPE at their workplace was 14% higher than those were it was not mandatory. The prevalence of PPE use among respondents who reported the availability of PPE at their workplace was 53% higher than those did not have PPE at their work places.
From the study, several recommendations were suggested in relation to improved use of PPE. Employers and managers in fecal waste private companies and fecal waste treatment plants were urged to regularly avail PPE to their sanitation workers and provide refresher trainings to reduce exposure to occupational hazards in their work places. These stakeholders were also encouraged to establish, review and strengthen safety policies at sanitation work places.
In addition, study participants expressed their plea to policy makers and other stakeholders to amend the present acts and regulations regarding safety of sanitation workers for easy implementation and enforcement of the such laws. “The Public Health Act needs to urgently be updated because you can find that something about excreta management safety is not clearly specified hence very hard to implement,” said a manager at one of the treatment plants. Participants further emphasized the need for communication of safety regulations for awareness of sanitation workers. One of the sanitation workers said “There should be mass dissemination of these guidelines and the Act so that people know them. Even workers will be able to demand for their rights if they are made aware,”
Some of the managers interviewed said there was inadequate financial support hence the need for increasing funding in occupation health and safety to effectively implement safety activities such as supervision and procurement of necessary equipment. “Another thing is more funding towards occupational health and safety management is needed including for supervision. If there are more trainings for these people [sanitation workers], and there are more resources given to the provision of adequate PPEs, I think we can do better,” said a manager.
This research study was conducted by a team of researchers from Makerere University School of Public Health led by Dr. David Musoke and Mr. Douglas Bulafu from the Department of Disease Control and Environmental Health. This project was made possible through a research grant from WaterAid.
Agriculture & Environment
Makerere Hosts Inaugural Falling Walls Lab Competition as Innovators Pitch Solutions to National Challenges
Students and researchers from Makerere University and other institutions pitched 12 innovations addressing challenges in healthcare, clean energy, agriculture, waste management and community resilience during the inaugural Falling Walls Lab Kampala, held at the School of Public Health Auditorium, Makerere University.
The competition brought together emerging innovators to present solutions to practical challenges through a three minute pitch, followed by questions from a panel of judges.
Modelled on the Falling Walls format that originated in Berlin, the event required each participant to identify a “wall” a problem or barrier, and demonstrate how their innovation seeks to break it down.
Mudhasi wins with newborn jaundice screening device
Andrew Mudhasi of Makerere University emerged as the overall winner with a score of 90 per cent for a low cost medical device designed to improve newborn jaundice screening across different skin tones.
Mudhasi explained that the device uses optical sensor technology and a skin tone targeting algorithm to provide a rapid reading, with the aim of helping nurses and clinicians identify jaundice more efficiently.
During questions from the jury, Mudhasi said the device had not yet been tested on actual babies but had undergone laboratory testing using simulated skin tones.
He reported an accuracy rate of 94 per cent when the device was compared with laboratory spectrophotometers.
The innovation is intended initially for use in clinics and hospitals, with Mudhasi saying the team is also considering a version that could eventually allow mothers to screen babies at home.
Mudhasi’s innovation has previously received recognition at the African Business Concept Challenge and the iF Design Student Award, according to his presentation.
Rhonda’s innovation tackles diaper waste
Rhoda John of the University of Nairobi emerged in second place with 89.6 per cent for an innovation addressing the problem of used diaper waste.
Under the theme “Breaking the wall of diaper waste and drug soils,” Rhonda explained that her team extracts sodium polyacrylate, the absorbent polymer found in diapers, and replaces the sodium with potassium.
The resulting potassium based superabsorbent material is designed to act as a “water battery” in soil by absorbing and retaining water for plants during dry periods.
John said testing showed a 99 per cent increase in germination and a 23 per cent increase in drought resistance.
The innovation also seeks to reduce the amount of used diapers ending up in landfills and the environmental effects associated with their decomposition.
During the question and answer session, John explained that her team was working with government environmental officials in Nairobi on a pilot collection system to address the challenge of gathering used diapers at scale.
Mahera takes third place with herbal peptic ulcer treatment
Stuart Mahera of Makerere University finished third with 86.2 per cent for a herbal formulation targeting peptic ulcers.
Presenting under the theme “Breaking the wall of Nature and Modern Medicine,” Mahera argued that conventional treatment for peptic ulcers can involve multiple medicines and may be associated with side effects and antimicrobial resistance.
His proposed formulation, MARAC capsules, is intended as a monotherapy, combining properties required for peptic-ulcer treatment in a single capsule.
Mahera said his team had carried out quality control work, including characterisation and dose quantification, and had conducted preclinical trials on laboratory mice.
He also told the jury that an application had been submitted to the National Drug Authority as the team awaits the next stage of the regulatory process.
According to Mahera, the proposed seven day treatment would cost about Shs21,000, compared with the existing 14 day treatment approach.
Innovators present solutions to practical challenges
The remaining presentations covered a wide range of challenges.
Esther Nakungu of Utamu University presented Agri-Track, a digital record keeping solution intended to improve visibility, accountability and management of farm operations and financial information.
Dr. Jimmy Chachiga, a Makerere University participant, presented a solar photovoltaic cooker with a heat storage system designed to provide a cleaner and more reliable cooking option during both sunny and non sunny periods.
His presentation focused on reducing dependence on biomass fuels and addressing the challenges associated with intermittent solar energy.
Abdul Noor Luttamaguzi, a PhD student and senior government fisheries officer, presented a mobile application aimed at helping fish farmers and extension officers report, track and manage disease outbreaks.
Henry Duke Tamale presented a herbal cream targeting antibiotic resistant biofilm infections associated with diabetic foot ulcers.
Marvin Seruwu proposed adapting existing near infrared brain monitoring technology to help detect extra-axial brain bleeds in health facilities where access to CT and MRI equipment is limited.
His proposal seeks to repurpose existing technology towards a diagnostic need that could be particularly important in settings where advanced imaging facilities are not readily available.
Kennedy Kisame presented a poultry alert and diagnosis system combining satellite weather information with computer vision disease detection. The proposed system could be accessed through a smartphone application, SMS or USSD, making it potentially usable by farmers with limited internet access.
Frank Atwiine proposed a solar powered mobile diagnostic van designed to bring ultrasound and other diagnostic services closer to rural communities.
Johnson Makmot, a software and blockchain developer, presented a platform that combines GPS tracking and blockchain-based tokens to incentivise and verify plastic-waste collection in Kampala.
Dr. Nelson Ndugu, from a partner university, presented an artificial intelligence tool designed to translate agricultural research publications into local Ugandan languages and generate voice notes for radio-based extension delivery.
The final presentation came from Dr. Juliet Akola, a Ugandan post doctoral researcher at Mangosuthu University of Technology in South Africa.
Akola presented a community digital resilience initiative focused on mapping risks in Kampala’s informal settlements, including flooding, fire, poor sanitation, waste management and inadequate infrastructure.
Her proposal seeks to combine local community knowledge with geographical information systems and link identified risks to action plans involving municipalities and other stakeholders.
Nawangwe calls for more investment in innovation
Closing the event, Prof. Nawangwe congratulated all the participants and described their presentations as an important beginning for Makerere University, Uganda and the wider region.
Drawing on his experience attending the Falling Walls conference in Berlin, the Vice Chancellor said initiatives of this nature are important because innovation will play a major role in determining the future of countries.
He encouraged participants to make their pitches more precise by clearly identifying the problem they are addressing, explaining their proposed solution and demonstrating what they have already achieved.
Prof. Nawangwe also welcomed the participation of innovators from other universities and countries, noting that the Kampala event had attracted participants beyond Makerere.
He thanked the Africa Office of the Falling Walls Foundation for its role in bringing the initiative to Makerere and encouraged continued support for innovation.
The Vice Chancellor further linked innovation to Uganda’s growing youth population and the need to develop home-grown solutions to address challenges such as youth unemployment.
The inaugural Falling Walls Lab Kampala ultimately provided a platform for innovators to move ideas beyond the classroom and laboratory and demonstrate how research, technology and creativity can be applied to challenges affecting communities.
| Position | Winner | Institution | Score |
| 1st | Andrew Mudhasi | Makerere University | 90% |
| 2nd | Rhoda John | University of Nairobi | 89.6% |
| 3rd | Stuart Mahera | Makerere University | 86.2% |
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