OBJECTIVE: To review the geography and history of sleeping sickness (Human African trypanosomiasis; HAT) over the past 100 years in West Africa, to identify priority areas for sleeping sickness surveillance and areas where HAT no longer seems active. METHOD: History and geography of HAT were summarized based on a review of old reports and recent publications and on recent results obtained from medical surveys conducted in West Africa up to 2006. RESULTS/ CONCLUSIONS: Active HAT foci seem to have moved from the North to the South. Endemic HAT presently appears to be limited to areas where annual rainfall exceeds 1200 mm, although the reasons for this remain unknown. There has also been a shift towards the south of the isohyets and of the northern distribution limit of tsetse. Currently, the most severely affected countries are Guinea and Ivory Coast, whereas the northern countries seem less affected. However, many parts of West Africa still lack information on HAT and remain to be investigated. Of particular interest are the consequences of the recent political crisis in Ivory Coast and the resulting massive population movements, given the possible consequences on HAT in neighbouring countries.
OBJECTIVE: To review the geography and history of sleeping sickness (Human African trypanosomiasis; HAT) over the past 100 years in West Africa, to identify priority areas for sleeping sickness surveillance and areas where HAT no longer seems active. METHOD: History and geography of HAT were summarized based on a review of old reports and recent publications and on recent results obtained from medical surveys conducted in West Africa up to 2006. RESULTS/ CONCLUSIONS: Active HAT foci seem to have moved from the North to the South. Endemic HAT presently appears to be limited to areas where annual rainfall exceeds 1200 mm, although the reasons for this remain unknown. There has also been a shift towards the south of the isohyets and of the northern distribution limit of tsetse. Currently, the most severely affected countries are Guinea and Ivory Coast, whereas the northern countries seem less affected. However, many parts of West Africa still lack information on HAT and remain to be investigated. Of particular interest are the consequences of the recent political crisis in Ivory Coast and the resulting massive population movements, given the possible consequences on HAT in neighbouring countries.
Authors: Philip J Budge; Ameyo M Dorkenoo; Yao K Sodahlon; Omofolarin B Fasuyi; Els Mathieu Journal: Am J Trop Med Hyg Date: 2013-11-04 Impact factor: 2.345
Authors: Pere P Simarro; Giuliano Cecchi; Massimo Paone; José R Franco; Abdoulaye Diarra; José A Ruiz; Eric M Fèvre; Fabrice Courtin; Raffaele C Mattioli; Jean G Jannin Journal: Int J Health Geogr Date: 2010-11-01 Impact factor: 3.918
Authors: Fabrice Courtin; Jean-Baptiste Rayaissé; Issa Tamboura; Oumar Serdébéogo; Zowindé Koudougou; Philippe Solano; Issa Sidibé Journal: Int J Environ Res Public Health Date: 2010-04-15 Impact factor: 3.390
Authors: J B Rayaisse; I Tirados; D Kaba; S Y Dewhirst; J G Logan; A Diarrassouba; E Salou; M O Omolo; P Solano; M J Lehane; J A Pickett; G A Vale; S J Torr; J Esterhuizen Journal: PLoS Negl Trop Dis Date: 2010-03-16
Authors: Maurice O Omolo; Ahmed Hassanali; Serge Mpiana; Johan Esterhuizen; Jenny Lindh; Mike J Lehane; Philippe Solano; Jean Baptiste Rayaisse; Glyn A Vale; Steve J Torr; Inaki Tirados Journal: PLoS Negl Trop Dis Date: 2009-05-12