Uganda Launches Shs2.4 Billion Tsetse Control Drive against Sleeping Sickness
Uganda, a country that achieved the remarkable feat of being validated by the World Health Organization (WHO) for eliminating the Gambiense Human African Trypanosomiasis (g-HAT)—the chronic form of sleeping sickness—as a public health problem in 2022, is now facing a renewed threat. The government has launched a substantial Shs2.4 billion Tsetse control program, driven by warnings of a possible resurgence of both human sleeping sickness (HAT) and animal trypanosomiasis (Nagana).
This significant financial commitment, announced by the State Minister for Agriculture, Animal Industry and Fisheries, Bright Rwamirama, underscores the continuous battle against the tsetse fly (Glossing species), the vector responsible for transmitting the Trypanosoma brucei parasite. The allocation is a proactive measure to safeguard the gains achieved over decades of intensive control efforts and to mitigate the significant socio-economic damage caused by these diseases, particularly in high-risk zones.
Human Health and Livestock Productivity
The tsetse fly is a notorious enemy of development in sub-Saharan Africa. In Uganda, the fly transmits two forms of disease with devastating effects:
- Sleeping Sickness (HAT): A fatal disease in humans if left untreated. Uganda is historically unique as the only country to have endemic foci of both the chronic (g-HAT) and acute (Rhodesiense HAT or r-HAT) forms. While the g-HAT form has been eliminated as a public health problem, the risk remains, particularly with the acute r-HAT form, which primarily uses cattle as its reservoir host.
- Nagana (Animal African Trypanosomiasis): This debilitating disease affects livestock, leading to reduced meat and milk production, infertility, and general poor health. Since the livestock sector is a major pillar of Uganda’s economy, the high tsetse fly infestation in certain areas continues to undermine productivity and threatens the livelihoods of millions of farmers. The infestation also affects tourism due to its presence along wildlife conservation corridors, particularly around Murchison Falls National Park.
A Targeted Intervention: The Shs2.4 Billion Strategy
The Shs2.4 billion intervention is specifically designed to suppress the vector population and the diseases it transmits across 78 high-risk districts. This large-scale, coordinated effort is focused on strategic deployment of chemical controls:
- Procurement of Insecticides: The government has procured 120,000 liters of deltamethrin-based insecticide. Deltamethrin is a key chemical because it is effective against both tsetse flies and ticks, offering a dual benefit to livestock farmers who already use acaricides.
- Targeted Distribution: The chemicals are being distributed in sub-regions identified as facing the highest risk, including Ankole, Teso, and Lango, as well as districts surrounding Murchison Falls National Park.
- Vector Control Methods: The intervention will support various control activities, most likely including the use of insecticide-treated baits, traps, and targets (like the “Tiny Targets” that were pivotal in the g-HAT elimination campaign) and the application of insecticide to livestock. These targeted methods work by attracting the fly through visual cues (blue and black colours) and/or odours, and killing them upon contact with the insecticide-impregnated material.
The Challenge of Sustainability and Farmer Responsibility
A major lesson learned from past control campaigns is that government-led interventions alone are not sufficient for long-term elimination; sustainability rests on farmer participation.
Minister Rwamirama emphasized that the current intervention is intended to demonstrate effectiveness and encourage routine farmer uptake of control methods. The minister noted that the government cannot sustainably supply chemicals indefinitely, especially when farmers in some areas abandon treatment after initial government-led spraying exercises, thereby increasing the risk of disease resurgence.
This highlights the shift in strategy toward a farmer-led, integrated control approach. Farmers are being encouraged to routinely use locally available and affordable acaricides that also suppress tsetse flies. This approach aims to make disease control a part of the regular livestock management cycle, rather than relying solely on sporadic, emergency government campaigns.
Cross-Border and Zone-Based Coordination
The dynamics of tsetse fly populations rarely respect political boundaries. The Minister pointed to cross-border challenges, particularly along the Uganda–Tanzania border, where uneven control efforts have previously allowed tsetse flies to spread and re-infest Ugandan districts.
To counter this, the government is working with the Ministry of Health and regional bodies, including the African Union–Interafrican Bureau for Animal Resources (AU-IBAR), to implement a coordinated, zone-based control approach. This strategy aims to treat entire affected ecological zones without leaving untreated pockets that could serve as breeding grounds or sources of re-infestation. The goal is to re-establish a national eradication roadmap that was previously disrupted.
Safeguarding the Elimination Gains
Uganda’s achievement in eliminating g-HAT as a public health problem was a decade-long collaborative success involving scientists, public health experts, and community mobilizers. The key was the combined strategy of mass-screening and treatment of cases alongside robust vector control, particularly through the large-scale deployment of tools like the insecticide-treated “Tiny Targets”.
The current Shs2.4 billion drive is fundamentally a defense mechanism. It is an acknowledgment that vector control cannot be viewed as a one-off achievement but requires continuous vigilance. The renewed risk of sleeping sickness is a stark reminder that as long as tsetse flies infest over 70-75% of Uganda’s landmass in savanna woodlands, riverine areas, and thickets, the public health and livestock sectors remain perpetually vulnerable.
The commitment of Shs2.4 billion is a critical investment in preserving public health, sustaining agricultural growth, and protecting the economic future of the 78 districts at risk. The ultimate success will depend on the sustained dedication of the government to monitoring the quality of the distributed chemicals and, crucially, the widespread, routine participation of the farming communities who are on the front lines of this ongoing battle.
