Nonhuman and human primates are likely the main reservoirs of the virus, and anthroponotic (human-to-vector-to-human) transmission occurs during outbreaks via mosquitoes and documented through handling of infected chimps, gorillas, fruit bats, monkeys, forest antelope, and porcupines that have been found ill or dead in the rainforest. Because pig farms in Africa can draw fruit bats and pig farms seem to amplify outbreaks of EVD, measures should be taken to limit transmission via pig farms.