This year's commemoration of Malaria Day by the Southern African Development Community (Sadc) on November 6 highlights the region's shared health priorities, including malaria elimination and coordinated responses to emerging health threats. Southern Africa has made considerable progress in malaria control and elimination. However, sustaining these gains is increasingly challenging due to changing rainfall patterns, extreme weather, population mobility, insecticide and drug resistance, and financial pressures.
The relationship between climate and malaria is complex, with rainfall creating mosquito breeding conditions and flooding potentially destroying habitats, disrupting health services, or displacing communities. The consequences depend on local circumstances and interacting factors. People in southern Africa routinely travel between areas with different malaria transmission levels for employment, trade, tourism, and family responsibilities. Infections acquired in malaria-endemic areas may only be recognized after travelers return to places where malaria is uncommon.
Malaria is shaped not only by mosquitoes and parasites but also by environmental conditions, human behavior, population movement, health care access, and the capacity of health systems to respond. In Gauteng, where malaria isn’t endemic, 414 cases and 11 deaths were reported during the first three months of 2026, with most infections occurring during travel to malaria-endemic areas. This demonstrates how changing transmission conditions can have consequences far beyond where infections occur.
Scientific advances in parasite biology, mosquito behavior, transmission dynamics, drug resistance, and environmental influences continue to create opportunities for malaria prevention and control. Research into parasite biology helps identify vulnerabilities that may inform future treatments, while understanding mosquito ecology supports more effective vector control approaches. These insights are increasingly complemented by environmental intelligence through initiatives such as the Remote Sensing for Malaria Control in Africa program.
Integrating environmental, biological, and epidemiological information could help malaria programs anticipate changing conditions, strengthen surveillance, and target interventions. However, sophisticated information has limited value if it does not reach decision-makers or translate into interventions that can be implemented, sustained, and accessed. The challenge is no longer only about generating knowledge but ensuring that knowledge informs action.
To effectively combat malaria, it is crucial to move beyond awareness and ensure that people understand their exposure and seek medical attention in time. The 2026 increase in travel-associated malaria cases demonstrates why communication must extend beyond endemic communities. Travellers need to understand their exposure, while health care professionals in non-endemic malaria settings must remain alert to malaria in patients with relevant travel histories.
Prof Tiaan De Jager and Dr Taneshka Kruger from the Institute for Sustainable Malaria Control at the University of Pretoria emphasize that malaria elimination cannot be achieved through isolated interventions or scientific advances alone. Environmental intelligence must inform preparedness, research must support practical interventions, health promotion must connect with communities, and leadership must translate evidence into coordinated, sustained action. Achieving zero malaria requires governments, researchers, healthcare professionals, malaria programs, and communities to work together, supported by accessible services and resilient health systems.
Key points
- Southern Africa faces new challenges in malaria control, including changing rainfall patterns and population mobility.
- Effective malaria control requires coordinated responses, including environmental intelligence, research, health promotion, and leadership.
- Malaria elimination needs a regional approach, with governments, researchers, and communities working together.
