yellow fever virus

an arbovirus, the type species of the genus Flavivirus, in the family Flaviviridae, endemic in tropic Africa south of the Sahara and in tropic South America, occasionally spreading to countries outside these areas; it is the cause of yellow fever of humans and other primates; the virus exists in wild primates, and probably also in edentates, marsupials, and rodents, and is transmitted to humans by Aedes aegypti and the Haemagogus complex of tree-top mosquitoes that feed on arboreal mammals.