Format

Send to

Choose Destination
Parasite. 2019;26:61. doi: 10.1051/parasite/2019061. Epub 2019 Oct 10.

Sleeping sickness in the historical focus of forested Guinea: update using a geographically based method.

Author information

1
Institut de Recherche pour le Développement (IRD), UMR 177 IRD-CIRAD INTERTRYP, Institut Pierre Richet/Institut National de Santé Publique, Bouaké, Côte d'Ivoire.
2
Programme National de Lutte contre la THA, Ministère de la Santé, Conakry, Guinea.
3
Institut de Recherche pour le Développement (IRD), UMR 177 IRD-CIRAD INTERTRYP, Programme National de Lutte contre la THA, Conakry, Guinea.
4
Institut de Recherche pour le Développement (IRD), UMR 177 IRD-CIRAD INTERTRYP, Montpellier, France.

Abstract

in English, French

In 2017, 1447 new cases of Human African Trypanosomiasis (HAT) were reported, which reflects considerable progress towards the World Health Organisation's target of eliminating HAT as a public health problem by 2020. However, current epidemiological data are still lacking for a number of areas, including historical HAT foci. In order to update the HAT situation in the historical focus of forested Guinea, we implemented a geographically based methodology: Identification of Villages at Risk (IVR). The methodology is based on three sequential steps: Desk-based IVR (IVR-D), which selects villages at risk of HAT on the basis of HAT archives and geographical items; Field-based IVR (IVR-F), which consists in collecting additional epidemiological and geographical information in the field in villages at risk; and to be Medically surveyed IVR (IVR-M), a field data analysis through a Geographic Information System (GIS), to compile a list of the villages most at risk of HAT, suitable to guide active screening and passive surveillance. In an area of 2385 km2 with 1420,530 inhabitants distributed in 1884 settlements, 14 villages with a population of 11,236 inhabitants were identified as most at risk of HAT and selected for active screening. Although no HAT cases could be confirmed, subjects that had come into contact with Trypanosoma brucei gambiense were identified and two sentinel sites were chosen to implement passive surveillance. IVR, which could be applied to any gambiense areas where the situation needs to be clarified, could help to reach the objective of HAT elimination.

KEYWORDS:

Elimination; Geography; Guinea; Risk; Sleeping sickness; Trypanosoma brucei gambiense

Supplemental Content

Full text links

Icon for EDP Sciences Icon for PubMed Central
Loading ...
Support Center