How many people in Africa will be affected by malaria if the temperature rises 2ºC?
Malaria has nothing to do with the ambient atmospheric temperature. True, the mosquito that transmits the disease thrives best in warmer climates but it can, and was also found in e.g. southern Europe. The Italian dictator Mussolini is credited to have removed malaria from Italy by burning the marshes where the mosquito was growing, with petrol. A dramatic solution that perhaps only dictators can take but it worked.