Kultumi Bungura was working as a malaria nurse when she got Ebola from a patient. Ebola killed 221 front-line health workers in Sierra Leone, which already had one of the world’s lowest doctor-to-patient ratios. The soft-spoken Kultumi survived. After being discharged, she went back to her clinic. “It’s our duty to help our people.” The mother of four suffers from headaches and vision problems, common ailments of Ebola survivors.