Sleeping sickness, also known as African trypanosomiasis, is a parasitic disease that can be fatal if left untreated.
It's caused by the bite of an infected tsetse fly, which is found in sub-Saharan Africa.
Guinea is the latest country to eliminate the disease.
Guinea's Minister of Health and Public Hygiene Dr Oumar Diouhé BAH said the elimination of sleeping sickness is the result of many years of effort by the Guinean government, its partners and communities.
World Health Organisation Regional Director for Africa Dr Matshidiso Moeti noted that the elimination of HAT by Guinea is a significant public health achievement.
