Monarch Disease Ontology id MONDO_0006019 (yaws) is an endemic, infectious, nonvenereal disease in humans that presents mainly in children younger than 15 years. The disease occurs primarily in warm, humid, tropical areas of Africa, Asia, South America, and Oceania, among poor rural populations where conditions of overcrowding and poor sanitation prevail. Infection with Treponema pertenue, a subspecies of Treponema pallidum, causes the disease. Also known as: Bouba, Treponema pallidum subsp. pertenue caused disease or disorder, Treponema pallidum subsp. pertenue disease or disorder, Treponema pallidum subsp. pertenue infectious disease, frambesia, frambesia tropica, frambosie, polypapilloma tropicum.