The first reported case of the deadly virus was in 1976. It was discovered in the Ebola River, from which its name is derived, in the Democratic Republic of Congo, Central Africa. The disease spread throughout the region, and developed 5 different strains. Four of those strains targeted humans, while one affected primates. In humans, the disease affects mostly babies under the age of 1. Fruit bats in Africa, which are hunted for food, are likely and stealthy carriers of the virus but do not exhibit any symptoms. Although cooking the bats would terminate the virus, the United Nations Food and Agriculture Organization urges people to avoid these animals because handling them during food preparation risks exposing them to the virus.