What makes Ebola virus among gorillas so difficult, she explained, is not just its ferocity but also the lack of data. “We don’t know if it was here before. We don’t know if they survive it. But we need to know how it passes through groups. We need to know where it is.” And the question of where has two dimensions. How broadly is Ebola virus distributed across Central Africa? Within what reservoir species does it lurk?
