When distressed by such environmental changes, animals are more likely to venture near human habitation in search of food, and come down from the upper tiers of forests into tree levels filled with predatory monkeys and chimps.
Once in Nzara, McCormick found the rafters of a Sudanese textile warehouse filled with bats. South African virologist Robert Swanepoel found swarms of bats in trees inside Kikwit town, and traces of Ebola in their blood. Even bats found in a cave in Spain carried Ebola.
The bats play a vital role in the survival of rain forests: The solution is not elimination of the animals, but of human contact with them.