From an article by Donald G. McNeil, Jr. published in The New York Times June 18, 2018.
Following the successes by the Carter Center in the Guinea Worm eradication program, there is now a resurgence of infections in dogs in Chad.
Dr. Mark L. Eberhard, a parasitologist, examining a Guinea worm in Bongor, Chad. When a female begins to make her way out of the body, a burning blister forms, forcing the infected host to search for relief in rivers, lakes and streams. The worm then releases larvae into the water and into the food chain.Photograph by Jane Hahn for The New York Times
800 dogs were found rto be infected with Guinea worm in Chad in 2017. 80 cases were reported of human infection in Chad and Ethiopia.