[ Cartographie du risque bilharzien dans la région de la marahoué (Côte d’Ivoire) ]
Volume 41, Issue 2, December 2023, Pages 413–427
Gnahoua Guy Roger Gnazale1, Aya Nicaise N’Guessan Née Okoubo2, and Fulgence Kouamé Kouame3
1 Unité de Recherche et d’Expertise Numérique, Université Virtuelle de , Abidjan, Côte d’Ivoi, Côte d’Ivoire
2 Zoologie et Biologie Animale de l’UFR Biosciences, Université Félix Houphouët-Boigny, Abidjan, Côte d’Ivoire
3 Département de géographique physique, Université Alassane Ouattara, Bouaké, Côte d’Ivoire
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Bilharzia or schistosomiasis is a parasitic disease present in the Marahoué region and constitutes a major public health problem. The spread of this disease is closely linked to the ecology of intermediate hosts, conditioned by environmental, climatic, socio-demographic and health factors. If morbidity is to be reduced, we need to have a better understanding of the spatial distribution of distribution factors, and to identify and locate outbreaks as well as areas at risk of contamination. The aim of this study is to map, using remote sensing and GIS, the areas at risk of bilharzian contamination in the Marahoué region. By classifying the parameters according to factors of risk and vulnerability to infection using Saaty’s multi-criteria analytical hierarchical process of complete aggregation by weighting, we were able to assign weights to each parameter. This methodology was used not only to draw up sensitivity and vulnerability maps for 2003 and 2013, but also to assess the risk of bilharzia infection. We noted four potential areas of risk of bilharzia contamination located around the region’s major towns. Of the 32 localities surveyed, 13 (40.62%) were located in high or medium risk areas. The year 2003 was marked by a predominance of présuméd intestinal bilharziasis, estimated at 62.50%. However, in 2013 we observed an acute presence of urinary bilharziasis estimated at 81.25%, compared with 18.75% for intestinal bilharziasis.
Author Keywords: Mapping, Bilharzia, multi-criteria analysis, risk area, Marahoué, Côte d’Ivoire.
Volume 41, Issue 2, December 2023, Pages 413–427
Gnahoua Guy Roger Gnazale1, Aya Nicaise N’Guessan Née Okoubo2, and Fulgence Kouamé Kouame3
1 Unité de Recherche et d’Expertise Numérique, Université Virtuelle de , Abidjan, Côte d’Ivoi, Côte d’Ivoire
2 Zoologie et Biologie Animale de l’UFR Biosciences, Université Félix Houphouët-Boigny, Abidjan, Côte d’Ivoire
3 Département de géographique physique, Université Alassane Ouattara, Bouaké, Côte d’Ivoire
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Bilharzia or schistosomiasis is a parasitic disease present in the Marahoué region and constitutes a major public health problem. The spread of this disease is closely linked to the ecology of intermediate hosts, conditioned by environmental, climatic, socio-demographic and health factors. If morbidity is to be reduced, we need to have a better understanding of the spatial distribution of distribution factors, and to identify and locate outbreaks as well as areas at risk of contamination. The aim of this study is to map, using remote sensing and GIS, the areas at risk of bilharzian contamination in the Marahoué region. By classifying the parameters according to factors of risk and vulnerability to infection using Saaty’s multi-criteria analytical hierarchical process of complete aggregation by weighting, we were able to assign weights to each parameter. This methodology was used not only to draw up sensitivity and vulnerability maps for 2003 and 2013, but also to assess the risk of bilharzia infection. We noted four potential areas of risk of bilharzia contamination located around the region’s major towns. Of the 32 localities surveyed, 13 (40.62%) were located in high or medium risk areas. The year 2003 was marked by a predominance of présuméd intestinal bilharziasis, estimated at 62.50%. However, in 2013 we observed an acute presence of urinary bilharziasis estimated at 81.25%, compared with 18.75% for intestinal bilharziasis.
Author Keywords: Mapping, Bilharzia, multi-criteria analysis, risk area, Marahoué, Côte d’Ivoire.
Abstract: (french)
La bilharziose ou schistosomiase est une affection parasitaire présente dans la région de la Marahoué et constitue un problème majeur de santé publique. L’expansion de cette maladie est fortement liée à l’écologie des hôtes intermédiaires, conditionnée par les facteurs environnementaux, climatiques, socio-démographiques et sanitaires. Une baisse de la morbidité nécessite une meilleure connaissance de la répartition spatiale des facteurs de distribution, l’identification et la localisation des foyers mais aussi des zones à risque de contamination. L’objectif de cette étude est de cartographier au moyen de la télédétection et des SIG, les zones à risque de contamination bilharzienne de la région de la Marahoué. La classification des paramètres par facteurs d’aléa et de vulnérabilité à l’infection selon le Processus de hiérarchisation analytique multicritères d’agrégation complète par pondération de Saaty, nous a permis d’affecter des poids à chaque paramètre. Cette méthodologie a permis non seulement d’élaborer les cartes d’aléa et de vulnérabilités des années 2003 et 2013 mais aussi d’évaluer le risque d’infection bilharzienne. Ainsi nous notons quatre potentiels zones de risque de contamination bilharzienne localisées autour des grandes villes de la région. 13 localités sur les 32 enquêtées se situent en zones de risque élevé et moyennement élevé soit 40,62 %. L’année 2003 est marquée par une prédominance de présence de présomption de bilharziose intestinale estimée à 62,50 %. Par contre en 2013 nous observons une présence aigue de bilharziose urinaire estimée à 81,25 % contre 18,75 % de bilharziose intestinale.
Author Keywords: Cartographie, Bilharziose, analyse multicritère, zone à risque, Marahoué, Côte d’Ivoire.
How to Cite this Article
Gnahoua Guy Roger Gnazale, Aya Nicaise N’Guessan Née Okoubo, and Fulgence Kouamé Kouame, “Bilharzia risk mapping in the marahoué region (Côte d’Ivoire),” International Journal of Innovation and Applied Studies, vol. 41, no. 2, pp. 413–427, December 2023.
