That African encounter in 1993 led to a thriving collaboration and friendship between the two researchers—an M.D. from South Dakota and a pharmacist from malaria-ravaged Mali.
Malaria infects hundreds of millions of people worldwide and kills an estimated 900,000 a year, taking an especially high toll on children in sub-Saharan Africa. Despite more than a half century of research, no effective malaria vaccine has been approved, and the resilient parasite that causes the disease has developed resistance to numerous drugs.
Photos: Plowe: Kaye Evans, Lutterodt / PR Newswire ©HHMI, Djimde: David Rolls