The researchers found that climate change has slightly increased childhood malaria overall but its effects vary sharply across the continent. The researchers estimate that historical human-caused climate change has caused 10.79 excess childhood malaria cases per 1 000 children in South Africa compared with a world without human-caused warming. Trisos said the study found a notable climate-driven increase in childhood malaria in Limpopo, Mpumalanga and KwaZulu-Natal attributable to human-caused climate change. In contrast, cooler regions, including Southern Africa and the East African highlands, are becoming increasingly suitable for malaria transmission as temperatures rise. Looking ahead, the study projects climate change will continue shifting malaria risk geographically.