Malaria and other diseases are one of the main reasons Europeans kept their African ambitions relatively contained. What is the geopolitical implication of eliminating malaria?
It has long been gone since Quinine essentially already let alone successors. Population spike maybe but also potential to stabilize more as persistent dangers cause humans to reproduce more. It would encourage more investment in children as well. No worries about "if my child dies all I spent on education would be lost and unrecoverable while say a jeep or plow would have something in the worst case".