Eswatini is engaged in a high-stakes race to become malaria-free. Despite significant progress, the landlocked nation is facing a “perfect storm” of challenges—ranging from climate change and insecticide resistance to shifting migration patterns—that threaten to undo years of hard-won gains.
The Frontline: Surveillance and Science
At the heart of Eswatini’s defense is its national insectary in Siphofaneni. Here, scientists conduct rigorous monitoring to stay ahead of the parasite. The work is highly technical:
– Species Identification: Teams use microscopes to analyze wing patterns and colors to identify specific mosquito species.
– Resistance Testing: Mosquitoes are used to test whether current insecticides remain effective or if the pests have evolved resistance.
– Sentinel Sites: Daily trapping efforts allow health officials to track where mosquitoes are moving and how their behavior is changing.
This scientific vigilance is paired with rapid-response human surveillance. When a patient tests positive, it triggers an immediate “phone alert.” Health workers then deploy to the specific hamlet to conduct house-to-house testing, distribute leaflets, and apply insecticide sprays to contain the outbreak before it clusters.
A Border Without Barriers
One of Eswatini’s greatest hurdles is its geography. While Eswatini recorded only 362 cases in 2024, its neighbors present a starkly different reality: Mozambique recorded 11.6 million cases, and South Africa recorded over 4,600.
The movement of people across porous, informal borders makes containment exceptionally difficult.
– Economic Migration: Workers from Mozambique often move into Eswatini for agricultural work, including in illegal cannabis farms.
– Hidden Populations: These workers often sleep outdoors to guard crops, frequently without protective bed nets, creating a high-risk environment for transmission.
– Tracking Difficulties: When people use unofficial crossings rather than documented checkpoints, health authorities struggle to track the movement of the parasite.
The Impact of a Changing Climate
Climate change is fundamentally altering the malaria landscape in Southern Africa. Two major trends are emerging:
1. Extended Seasons: Historically, malaria peaked in March. Now, high case numbers persist into May, coinciding with the sugarcane harvest when more people are working in the fields.
2. New Breeding Grounds: Extreme weather, such as floods, creates sudden abundance of stagnant water, turning ordinary landscapes into massive mosquito breeding sites.
“As you think you’re getting closer and closer [to elimination], something happens—like extreme weather patterns, which then affect the rate at which mosquitoes are breeding,” says Nomcebo Dlamini, chief malaria surveillance officer.
The Global Funding Crisis
The fight against malaria is not just a local struggle but a global one. The Global Fund to Fight AIDS, Tuberculosis and Malaria has noted that malaria cases have risen globally for six consecutive years.
A significant driver of this trend is the reduction in international aid. Last year, the Global Fund had to implement $1.4 billion in cuts to existing grants due to unfulfilled donor pledges. While Eswatini has managed to maintain core services, these cuts have already begun to reduce the frequency of training for essential health workers.
The Path Forward
To combat these multifaceted threats, the Eswatini government is proposing a shift toward integrated border controls. By making official travel documents and passports more accessible, the government hopes to encourage formal crossings, which would allow for better health surveillance and more predictable data.
While the obstacles—insecticide resistance, climate volatility, and dwindling funds—are formidable, Eswatini remains committed to its goal.
Conclusion
Eswatini’s mission to eliminate malaria is being tested by environmental shifts and economic realities beyond its borders. Success will depend on whether the nation can strengthen its surveillance and formalize border movements faster than the disease can adapt to a changing climate.
