Dr. Alhaji Umar N'jai is a Sierra Leonean Ebola researcher and nonprofit leader. While working as a pathologist at the University of Wisconsin, Madison, he worked on developing an Ebola vaccine. He also hosted the Pan Africa Radio Show on WORT. In conjunction with Project 1808, a nonprofit he founded, N'jai has led trainings in Sierra Leone on preparing for potential Ebola outbreaks.