In 2021, malaria caused 619,000 deaths, 77% of which were children under five, and 96% of them in Africa. But now, after decades of research -- and several false dawns -- a malaria vaccine known as R21/Matrix-M (henceforth just R21) has been shown to be effective in 70-78% of cases. Although three doses are required before that level of protection is reached, and a booster is needed one year...
