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Assessing the Risk of Occurrence of Bluetongue in Senegal

Bluetongue is a non-contagious viral disease affecting small ruminants and cattle that can cause severe economic losses in the livestock sector. The virus is transmitted by certain species of the genus Culicoides and consequently, understanding their distribution is essential to enable the identific...

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Autores principales: Gahn, Marie Cicille Ba, Niakh, Fallou, Ciss, Mamadou, Seck, Ismaila, Lo, Modou Moustapha, Fall, Assane Gueye, Biteye, Biram, Fall, Moussa, Ndiaye, Mbengué, Ba, Aminata, Seck, Momar Talla, Sall, Baba, Lo, Mbargou, Faye, Coumba, Squarzoni-Diaw, Cécile, Ka, Alioune, Amevoin, Yves, Apolloni, Andrea
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7697801/
https://www.ncbi.nlm.nih.gov/pubmed/33187059
http://dx.doi.org/10.3390/microorganisms8111766
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author Gahn, Marie Cicille Ba
Niakh, Fallou
Ciss, Mamadou
Seck, Ismaila
Lo, Modou Moustapha
Fall, Assane Gueye
Biteye, Biram
Fall, Moussa
Ndiaye, Mbengué
Ba, Aminata
Seck, Momar Talla
Sall, Baba
Lo, Mbargou
Faye, Coumba
Squarzoni-Diaw, Cécile
Ka, Alioune
Amevoin, Yves
Apolloni, Andrea
author_facet Gahn, Marie Cicille Ba
Niakh, Fallou
Ciss, Mamadou
Seck, Ismaila
Lo, Modou Moustapha
Fall, Assane Gueye
Biteye, Biram
Fall, Moussa
Ndiaye, Mbengué
Ba, Aminata
Seck, Momar Talla
Sall, Baba
Lo, Mbargou
Faye, Coumba
Squarzoni-Diaw, Cécile
Ka, Alioune
Amevoin, Yves
Apolloni, Andrea
author_sort Gahn, Marie Cicille Ba
collection PubMed
description Bluetongue is a non-contagious viral disease affecting small ruminants and cattle that can cause severe economic losses in the livestock sector. The virus is transmitted by certain species of the genus Culicoides and consequently, understanding their distribution is essential to enable the identification of high-risk transmission areas. In this work we use bioclimatic and environmental variables to predict vector abundance, and estimate spatial variations in the basic reproductive ratio [Formula: see text]. The resulting estimates were combined with livestock mobility and serological data to assess the risk of Bluetongue outbreaks in Senegal. The results show an increasing abundance of C. imicola, C. oxystoma, C. enderleini, and C. miombo from north to south. [Formula: see text] < 1 for most areas of Senegal, whilst southern (Casamance) and southeastern (Kedougou and part of Tambacounda) agro-pastoral areas have the highest risk of outbreak ([Formula: see text] = 2.7 and 2.9, respectively). The next higher risk areas are in the Senegal River Valley ([Formula: see text] = 1.07), and the Atlantic coast zones. Seroprevalence rates, shown by cELISA, weren’t positively correlated with outbreak probability. Future works should include follow-up studies of competent vector abundancies and serological surveys based on the results of the risk analysis conducted here to optimize the national epidemiological surveillance system.
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spelling pubmed-76978012020-11-29 Assessing the Risk of Occurrence of Bluetongue in Senegal Gahn, Marie Cicille Ba Niakh, Fallou Ciss, Mamadou Seck, Ismaila Lo, Modou Moustapha Fall, Assane Gueye Biteye, Biram Fall, Moussa Ndiaye, Mbengué Ba, Aminata Seck, Momar Talla Sall, Baba Lo, Mbargou Faye, Coumba Squarzoni-Diaw, Cécile Ka, Alioune Amevoin, Yves Apolloni, Andrea Microorganisms Article Bluetongue is a non-contagious viral disease affecting small ruminants and cattle that can cause severe economic losses in the livestock sector. The virus is transmitted by certain species of the genus Culicoides and consequently, understanding their distribution is essential to enable the identification of high-risk transmission areas. In this work we use bioclimatic and environmental variables to predict vector abundance, and estimate spatial variations in the basic reproductive ratio [Formula: see text]. The resulting estimates were combined with livestock mobility and serological data to assess the risk of Bluetongue outbreaks in Senegal. The results show an increasing abundance of C. imicola, C. oxystoma, C. enderleini, and C. miombo from north to south. [Formula: see text] < 1 for most areas of Senegal, whilst southern (Casamance) and southeastern (Kedougou and part of Tambacounda) agro-pastoral areas have the highest risk of outbreak ([Formula: see text] = 2.7 and 2.9, respectively). The next higher risk areas are in the Senegal River Valley ([Formula: see text] = 1.07), and the Atlantic coast zones. Seroprevalence rates, shown by cELISA, weren’t positively correlated with outbreak probability. Future works should include follow-up studies of competent vector abundancies and serological surveys based on the results of the risk analysis conducted here to optimize the national epidemiological surveillance system. MDPI 2020-11-11 /pmc/articles/PMC7697801/ /pubmed/33187059 http://dx.doi.org/10.3390/microorganisms8111766 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gahn, Marie Cicille Ba
Niakh, Fallou
Ciss, Mamadou
Seck, Ismaila
Lo, Modou Moustapha
Fall, Assane Gueye
Biteye, Biram
Fall, Moussa
Ndiaye, Mbengué
Ba, Aminata
Seck, Momar Talla
Sall, Baba
Lo, Mbargou
Faye, Coumba
Squarzoni-Diaw, Cécile
Ka, Alioune
Amevoin, Yves
Apolloni, Andrea
Assessing the Risk of Occurrence of Bluetongue in Senegal
title Assessing the Risk of Occurrence of Bluetongue in Senegal
title_full Assessing the Risk of Occurrence of Bluetongue in Senegal
title_fullStr Assessing the Risk of Occurrence of Bluetongue in Senegal
title_full_unstemmed Assessing the Risk of Occurrence of Bluetongue in Senegal
title_short Assessing the Risk of Occurrence of Bluetongue in Senegal
title_sort assessing the risk of occurrence of bluetongue in senegal
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7697801/
https://www.ncbi.nlm.nih.gov/pubmed/33187059
http://dx.doi.org/10.3390/microorganisms8111766
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