We had watched the dinghy from about a mile out, making its way slowly across the Aegean Sea to the island of Lesbos. The scene along this eight-mile stretch of coastline has become familiar: a small corps of volunteers waiting on the shore, using hand gestures to caution the person steering the boat to slow down; the overcrowded dinghy full of anxious faces turned toward land tantalizingly close.

When Ebola came to Jartumah Kamara's village, he worked with the IRC and local community to help people combat the outbreak.