Research
Makerere Scientists Document Climate-Smart Innovation in Sentema, Applaud Farmer’s Odor-Control Breakthrough
A team of scientists under the regional research initiative “Building Capacity for Innovation and Advancement of Climate Smart Agriculture in East and Southern Africa” (CICSA-E&SA) visited Mr. Mugisha Jonan, an urban farmer and environmentalist in Sentema Wakiso District, whose adoption of innovative practices is redefining the feasibility of farming in densely populated urban settings.
Through the Nutrient Recycling Innovation, Mr. Mugisha has not only resolved the persistent issue of odor from his dairy farm, but is also unlocking more profitable outcomes by embracing climate-smart agricultural techniques. Central to his approach is the use of VTC Technology, a system designed to recover nutrients from diverse waste streams, including farm and market waste, and return them to their original sources. This transformative method was introduced to him by Dr. Herbert Mukiibi, a renowned scientist from the College of Veterinary Medicine, Animal Resources and Biosecurity at Makerere University.
Based on the demonstration on the farm, the innovative practice will help in reshaping urban agriculture by enhancing sustainable food production while simultaneously addressing critical environmental challenges such as waste management and odor control. Mr. Mugisha’s work stands as a compelling example of how local science-driven solutions can empower urban farmers and contribute to greener, more resilient cities.
Dr. Dorothy Nampanzira Kalule led a team that included Dr. Herbert Mukiibi, the innovator who collaborated directly with Mr. Mugisha to implement the nutrient recycling innovation. Also part of the team was Prof. Josephine Esaete from the College of Education and External Studies, part of the members of the bigger project research team that includes Prof. Robert Stephen Tabuti and Prof. Vincent Muwanika, both from the College of Agricultural and Environmental Sciences (CAES) at Makerere University.
“Mr. Mugisha’s work exemplifies the kind of innovation we aim to capture, document and validate as solutions that are proven to work, locally driven, environmentally sound, and socially inclusive,” said Dr. Nampanzira, following a tour of the project site nestled within a densely populated urban residential area.
Dr. Nampanzira said the reason for the visit to the farmer was because through the project, scientists were looking out for farmers doing unique things that actually give them good results which are not known to the scientists. She said the purpose was to validate such practices and have them promoted.
The project, Building Capacity for Innovation and Advancement of Climate-Smart Agriculture in East and Southern Africa (CICSA-E&SA), continues to engage with farmers who have adopted some climate-smart agricultural practices by identifying and supporting solutions that work for farmers on the ground. Through hands-on engagement and collaboration, the initiative focuses on practical innovations that address real challenges, ensuring that climate-smart agriculture is not only sustainable, but also accessible and effective for local communities.
While describing the innovation demonstrated by Mr. Mugisha, Dr. Herbert Mukiibi explained that the Nutrient Recycling Technology is designed to recover nutrients from various waste streams such as domestic, farm, hospital, schools or market waste and return them to their original source. If the nutrients came from the garden, the ultimate goal is to return them to the garden, Dr. Mukiibi noted. He said that most systems release nutrients through waste, which wastes are often mistreated because people don’t realize they are valuable resources. He said through such interventions, they were coming in to tap on these wastes and return them to the garden in a ready form that can be used by the crops for better yields without necessarily using inorganic forms of fertilizers.
Dr. Mukiibi emphasized that this technology not only promotes sustainable agriculture but also transforms public perception of waste, from a nuisance into a valuable resource thereby encouraging more responsible and productive environmental practices. He commended Mr. Mugisha, the farmer behind the initiative, for embracing the technology and personally financing its development. Thanks to Mr. Mugisha’s commitment, the project has advanced to the point where it is nearly ready to produce, package, and sell organic manure, marking a significant milestone in practical nutrient recycling.
“We want to document the various innovations that promote climate-smart agriculture while simultaneously addressing farmers’ real-world challenges,” said Prof. Asaete Josephine, who is part of the research team. “The innovation demonstrated by Mr. Mugisha not only solved his initial problem, the unpleasant smell of dung that was causing concern in the neighborhood, but also evolved into a broader solution. What began as an effort to manage odor has also addressed nutrient deficiencies. That’s where the climate-smart aspect comes in, she noted. Instead of spending resources on inorganic fertilizers, the farmer is now benefiting from nutrient recycling, which promotes faster plant growth while tackling the original issue of odor.”, she noted.
Mr. Mugisha informed the visiting team that he initially started the farm to meet his family’s nutritional needs. However, as the farm grew, he encountered significant challenges related to waste management, which led him to connect with Dr. Herbert Mukiibi, whose expertise helped guide him toward innovative solutions. He said he first adopted biogas technology yet, odor problem persisted, leading him to explored more sustainable options and eventually embraced the nutrient recycling innovation. He said transforming waste into organic manure enabled him resolve the environmental concerns but also enhanced the productivity of his vegetable gardens, and is moving towards packaging and sale of organic manure.
The CICSA-E&SA project is a multi-institutional collaboration led by Makerere University, in partnership with the Norwegian University of Life Sciences (Norway), Maseno University (Kenya), and LUANAR and DARS (Malawi). The project is funded by the Norwegian Agency for International Cooperation and Quality Enhancement in Higher Education (Diku) and aims to promote climate-resilient agricultural practices across East and Southern Africa.
Uganda’s latest national HIV survey reveals lower viral suppression among adolescents and young adults living with HIV than among older adults, even as the country records substantial improvements in controlling the virus. The findings come from Uganda Population-Based HIV Impact Assessment (UPHIA 2025), a national household survey examining HIV prevalence and whether people living with the virus know their status, receive treatment, and achieve viral suppression.
Releasing the preliminary UPHIA 2025 findings at the Uganda Media Centre on 1 October 2026, Minister of Health Hon. Dr. Chris Baryomunsi called for earlier prevention and testing, particularly among adolescent girls and young women, alongside support for treatment adherence. “We must reach out to the young people, ensure that they have information, they test, take treatment, and adhere to the treatment guidance,” he urged.
Hon. Baryomunsi recalled how fear had discouraged testing during his university years: “I remember when we were at university, we went for testing at the university hospital. We sat there for three hours. Some of us left without even testing because it was scary.” Today, he explained, “even if you test HIV positive, you can be initiated on treatment, and you live normally like the rest of those who don’t have HIV.”
UPHIA 2025 was locally led under the Ministry of Health’s overall leadership, with Makerere University School of Public Health serving as the prime implementer, a role ICAP at Columbia University held in the previous two surveys. The Uganda Bureau of Statistics led sampling, while the Uganda Virus Research Institute and National Health Laboratory and Diagnostic Services led laboratory operations. Regional referral hospitals and local governments supported implementation, and the U.S. government provided US$10 million through PEPFAR, along with technical assistance from the U.S. CDC.
UPHIA collected data from July to September 2025 among people aged 15 and above, including those outside routine treatment services. Of 6,283 eligible households, 94.4% completed interviews. Researchers interviewed 13,801 people and tested 13,477 for HIV.
Testing followed Uganda’s national algorithm, with laboratory confirmation of positive samples, viral-load measurement, and checks for antiretroviral medicines to establish treatment use. Researchers weighted the estimates to account for the sampling design. Participants received counselling and results, and those who tested positive were referred for treatment.
Hon. Baryomunsi thanked participants and their families for welcoming survey staff and contributing their time, information and samples, without which the national evidence would not have been available.
National progress and the youth gap
The survey estimated HIV prevalence, which means the proportion of people living with HIV, at 5.9% among those aged 15 and above, corresponding to about 1.496 million people in this age group nationwide. Prevalence was 7.3% among women and 4.1% among men, ranging from 1.3% in Karamoja to 8% in the South Western region.
Among people aged 15 and above living with HIV, 86% had achieved viral suppression, meaning a low amount of HIV in the blood, measured in UPHIA as fewer than 1,000 copies per millilitre. Suppression stood at 69.3% among adolescents and young adults aged 15–24 living with HIV, compared with 89.9% among those aged 50 and above. These estimates cover people living with HIV regardless of whether they know their status or receive treatment.
HIV prevalence among people aged 15–24 was 1.5%, including 2% among young women and 1% among young men. Among young women, prevalence was 1.3% at ages 15–19 and 2.8% at ages 20–24. These differences support attention to earlier prevention and testing, although they do not establish when infections occurred.
The highest prevalence estimates occurred among middle-aged adults: 15.7% among women aged 40–44 and 11.7% among men aged 45–49. Lower suppression among young people therefore requires attention alongside the higher HIV prevalence among middle-aged adults. Comparing the same age group across both surveys, viral suppression among people aged 15–64 increased from 74.9% in 2020–21 to 86.1% in 2025, while HIV prevalence remained at 5.9%.
Diagnosis and the path to 2030
The treatment results identify diagnosis as the main national gap. Among people aged 15 and above living with HIV, 85.3% knew their status. Of those aware, 99.1% were receiving treatment; among those receiving treatment, 96.5% had achieved suppression.
The 95-95-95 targets aimed for 95% of people living with HIV to know their status, 95% of those diagnosed to receive treatment, and 95% of those receiving treatment to achieve viral suppression by 2025. Among people aged 15 and above, Uganda exceeded the treatment and suppression targets, while diagnosis remained below target. UNAIDS’s Global AIDS Strategy 2026–2031 retains these targets towards ending AIDS as a public health threat by 2030.
According to WHO, viral suppression protects health and helps prevent HIV transmission. Uncontrolled HIV weakens the immune system, increasing the risk of serious illness. With continued treatment as prescribed, sexual transmission risk is negligible when HIV remains suppressed but detectable, and zero when undetectable. The Uganda AIDS Commission estimated over 34,000 new HIV infections in 2025, underscoring the importance of early diagnosis, timely treatment, and sustained suppression alongside other prevention measures.
The demographic stakes are substantial. People aged 15–24 constituted 21.2% of Uganda’s population in the 2024 census. The country’s Fourth National Development Plan, covering 2025–2030, prioritises a healthy, knowledgeable, skilled and productive population and reducing HIV through primary health care. Protecting young people’s health, therefore, supports their participation in education, work, and national development; UPHIA helps identify where services need greater attention.
Turning evidence into action
The study’s conclusions identify three priorities: sustain treatment outcomes, find people unaware of their status, and improve suppression among younger people. Permanent Secretary Dr. Diana Atwine connected the findings to the Ministry’s planning.
“We do believe that these results are a true reflection of what is happening in our country as far as the HIV status is concerned, and we do believe that it will give us a very clear direction and the roadmap that we are going to take in the next five years to target and to get our targets achieved.”
Acting on these priorities requires funding for services and research. Hon. Baryomunsi outlined plans to target resources where needs are greatest, strengthen district services and align partner support with government priorities. Responding to journalists’ questions, he noted the government’s intention to increase domestic funding for the HIV response, including research.
“The HIV/AIDS response, including research and surveys such as this one, has largely been funded by partners in the past. The government of Uganda is committed to allocating more resources from our domestic budget to support the response and research,” he noted.
For the first time in the UPHIA series, the survey assessed selected noncommunicable disease indicators among people aged 15 and above: 15.5% had elevated blood pressure, 24.8% were overweight or obese, and 0.9% had raised random blood glucose. These screening findings align with the Ministry’s integration agenda and Hon. Baryomunsi’s call to bring HIV and chronic care services together to address people’s wider health needs.
Speaking at the release of the preliminary results, U.S. Embassy Chargé d’Affaires Mikael (Mika) Cleverley described UPHIA 2025 as the first Population-Based HIV Impact Assessment worldwide fully led and implemented by the country itself.
“The study was led by Ugandan scientists, Ugandan managers, Ugandan public servants, Ugandan field teams, from design to data collection to analysis. And this is what two decades of focused strategic U.S. foreign investments in the public health sector was meant to produce, is to reinforce Ugandan leadership and Ugandan-led efforts.”
At the survey launch on 29 May 2025, MakSPH Dean Prof. Rhoda Wanyenze highlighted the partnership’s contribution: “The partnership between Makerere University and CDC has not only helped build national capacity in surveillance and epidemiology, but has also strengthened our ability to lead high-quality, large-scale national surveys.”
The Dean added: “After two decades of joint work, we are proud that UPHIA is now a fully Ugandan-led effort. This is critical to the sustainability of the skills and knowledge generation to inform our local response.”
UPHIA 2025 shows how far Uganda’s HIV response has advanced and where gaps remain. As the country works towards ending AIDS as a public health threat by 2030, reaching young people with testing, treatment, and continued care will be essential to extending those gains.
Read the full UPHIA 2025 summary results here:
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