The epidemiology of Culicoides-borne diseases in the Indian Ocean: Examples of the Bluetongue and Epizootic Hemorrhagic Disease fever viruses in La Reunion Island
Bluetongue and epizootic hemorrhagic disease viruses are recognized worldwide as important vector-borne viruses with major consequences on livestock trade and breed-ing. They are both transmitted by certain small hematophagous biting midge species belonging to the Culicoides genus, to cattle, sheep and goats. If the epidemiological sit-uation in epizootic territories has been recently widely studied after massive outbreaks in Europe, endemic areas have been neglected. In this presentation, we will review three studies implemented between 2016-2018 in La Réunion Island to give better in-sights to the local situation: (i) a virological and serological survey on cattle to identify the two virus dynamics and prevalence, (ii) an entomological study on Culicoides spe-cies diversity and seasonal dynamics, and (iii) a virus screening in Culicoides species to identify and characterize vector species of both viruses, the level of infection in wild species populations and virus dynamics in Culicoides populations. Altogether, these three studies helped to have a better understanding of the epidemiological situations in the island. Five Culicoides species are described on the island, presenting an altitudi-nal gradient and 4 species are implicated in both virus transmissions. Seasonal dynam-ics is particularly marked for 3 species. Therefore, bluetongue might be considered as an endemic disease with continuous virus circulation, limited clinical cases and high serological prevalence while Epizootic hemorrhagic disease appeared as an epizootic disease with seasonal transmission patterns.
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dig-cirad-fr-5898332023-10-09T09:06:04Z http://agritrop.cirad.fr/589833/ http://agritrop.cirad.fr/589833/ The epidemiology of Culicoides-borne diseases in the Indian Ocean: Examples of the Bluetongue and Epizootic Hemorrhagic Disease fever viruses in La Reunion Island. Garros Claire, Grimaud Yannick, Veron L., Boucher Floriane, Benkimoun Samuel, Hoarau Johny, Tran Annelise, Guis Hélène, Cardinale Eric, Cetre-Sossah Catherine. 2018. In : 21st E-SOVE (European Society for Vector Ecology) Meeting Abstract Book. Arthropod Vector Science for the benefit of society: Educate, Empathize, Engage. ESOVE. Palermo : ESOVE, Résumé, 82. E-SOVE (European Society for Vector Ecology) Meeting. 21, Palermo, Italie, 22 Octobre 2018/26 Octobre 2018. The epidemiology of Culicoides-borne diseases in the Indian Ocean: Examples of the Bluetongue and Epizootic Hemorrhagic Disease fever viruses in La Reunion Island Garros, Claire Grimaud, Yannick Veron, L. Boucher, Floriane Benkimoun, Samuel Hoarau, Johny Tran, Annelise Guis, Hélène Cardinale, Eric Cetre-Sossah, Catherine eng 2018 ESOVE 21st E-SOVE (European Society for Vector Ecology) Meeting Abstract Book. Arthropod Vector Science for the benefit of society: Educate, Empathize, Engage Bluetongue and epizootic hemorrhagic disease viruses are recognized worldwide as important vector-borne viruses with major consequences on livestock trade and breed-ing. They are both transmitted by certain small hematophagous biting midge species belonging to the Culicoides genus, to cattle, sheep and goats. If the epidemiological sit-uation in epizootic territories has been recently widely studied after massive outbreaks in Europe, endemic areas have been neglected. In this presentation, we will review three studies implemented between 2016-2018 in La Réunion Island to give better in-sights to the local situation: (i) a virological and serological survey on cattle to identify the two virus dynamics and prevalence, (ii) an entomological study on Culicoides spe-cies diversity and seasonal dynamics, and (iii) a virus screening in Culicoides species to identify and characterize vector species of both viruses, the level of infection in wild species populations and virus dynamics in Culicoides populations. Altogether, these three studies helped to have a better understanding of the epidemiological situations in the island. Five Culicoides species are described on the island, presenting an altitudi-nal gradient and 4 species are implicated in both virus transmissions. Seasonal dynam-ics is particularly marked for 3 species. Therefore, bluetongue might be considered as an endemic disease with continuous virus circulation, limited clinical cases and high serological prevalence while Epizootic hemorrhagic disease appeared as an epizootic disease with seasonal transmission patterns. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/589833/1/Garros%20abstracts%20ESove%202018.pdf text Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html info:eu-repo/semantics/reference/purl/https://www.aedescost.eu/sites/default/files/2019-07/Scientific%20Programme%20-%20Palermo%2C%20Italy%20%E2%80%93%2021-26%20October%202018.pdf |
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Bluetongue and epizootic hemorrhagic disease viruses are recognized worldwide as important vector-borne viruses with major consequences on livestock trade and breed-ing. They are both transmitted by certain small hematophagous biting midge species belonging to the Culicoides genus, to cattle, sheep and goats. If the epidemiological sit-uation in epizootic territories has been recently widely studied after massive outbreaks in Europe, endemic areas have been neglected. In this presentation, we will review three studies implemented between 2016-2018 in La Réunion Island to give better in-sights to the local situation: (i) a virological and serological survey on cattle to identify the two virus dynamics and prevalence, (ii) an entomological study on Culicoides spe-cies diversity and seasonal dynamics, and (iii) a virus screening in Culicoides species to identify and characterize vector species of both viruses, the level of infection in wild species populations and virus dynamics in Culicoides populations. Altogether, these three studies helped to have a better understanding of the epidemiological situations in the island. Five Culicoides species are described on the island, presenting an altitudi-nal gradient and 4 species are implicated in both virus transmissions. Seasonal dynam-ics is particularly marked for 3 species. Therefore, bluetongue might be considered as an endemic disease with continuous virus circulation, limited clinical cases and high serological prevalence while Epizootic hemorrhagic disease appeared as an epizootic disease with seasonal transmission patterns. |
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conference_item |
author |
Garros, Claire Grimaud, Yannick Veron, L. Boucher, Floriane Benkimoun, Samuel Hoarau, Johny Tran, Annelise Guis, Hélène Cardinale, Eric Cetre-Sossah, Catherine |
spellingShingle |
Garros, Claire Grimaud, Yannick Veron, L. Boucher, Floriane Benkimoun, Samuel Hoarau, Johny Tran, Annelise Guis, Hélène Cardinale, Eric Cetre-Sossah, Catherine The epidemiology of Culicoides-borne diseases in the Indian Ocean: Examples of the Bluetongue and Epizootic Hemorrhagic Disease fever viruses in La Reunion Island |
author_facet |
Garros, Claire Grimaud, Yannick Veron, L. Boucher, Floriane Benkimoun, Samuel Hoarau, Johny Tran, Annelise Guis, Hélène Cardinale, Eric Cetre-Sossah, Catherine |
author_sort |
Garros, Claire |
title |
The epidemiology of Culicoides-borne diseases in the Indian Ocean: Examples of the Bluetongue and Epizootic Hemorrhagic Disease fever viruses in La Reunion Island |
title_short |
The epidemiology of Culicoides-borne diseases in the Indian Ocean: Examples of the Bluetongue and Epizootic Hemorrhagic Disease fever viruses in La Reunion Island |
title_full |
The epidemiology of Culicoides-borne diseases in the Indian Ocean: Examples of the Bluetongue and Epizootic Hemorrhagic Disease fever viruses in La Reunion Island |
title_fullStr |
The epidemiology of Culicoides-borne diseases in the Indian Ocean: Examples of the Bluetongue and Epizootic Hemorrhagic Disease fever viruses in La Reunion Island |
title_full_unstemmed |
The epidemiology of Culicoides-borne diseases in the Indian Ocean: Examples of the Bluetongue and Epizootic Hemorrhagic Disease fever viruses in La Reunion Island |
title_sort |
epidemiology of culicoides-borne diseases in the indian ocean: examples of the bluetongue and epizootic hemorrhagic disease fever viruses in la reunion island |
publisher |
ESOVE |
url |
http://agritrop.cirad.fr/589833/ http://agritrop.cirad.fr/589833/1/Garros%20abstracts%20ESove%202018.pdf |
work_keys_str_mv |
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