In early December 2013, in the low-lying mountains of Guinea in West Africa, a 2-year-old named Emile Ouamouno had a sudden onset of strange symptoms: high fever, bloody stool, and vomiting. On December 6, the boy died in his home village of Meliandou. Emile’s 4-year-old sister, mother, and grandmother died shortly after, each suffering similar […]