West Nile virus infection in horses, Indian ocean

Cardinale Eric, Bernard Camille, Lecollinet Sylvie, Rakotoharinome Vincent Michel, Ravaomanana Julie, Roger M., Olive Marie-Marie, Meenowa Deodass, Jaumally Mahmad Reshad, Melanie Jimmie, Héraud Jean Michel, Zientara Stéphan, Cetre-Sossah Catherine. 2017. West Nile virus infection in horses, Indian ocean. Comparative Immunology, Microbiology and Infectious Diseases, 53 : pp. 45-49.

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Quartile : Q1, Sujet : VETERINARY SCIENCES / Quartile : Q3, Sujet : MICROBIOLOGY / Quartile : Q4, Sujet : IMMUNOLOGY

Abstract : The circulation of West Nile virus (WNV) in horses was investigated in the Southwest Indian ocean. In 2010, blood samples were collected from a total of 303 horses originating from Madagascar, Mauritius, Reunion and the Seychelles and tested for WNV-specific antibodies. An overall seroprevalence of 27.39% was detected in the Indian Ocean with the highest WNV antibody prevalence of 46.22% (95% CI: [37.4–55.2%]) in Madagascar. The age and origin of the horses were found to be associated with the WNV infection risk. This paper presents the first seroprevalence study investigating WN fever in horses in the Southwest Indian Ocean area and indicates a potential risk of infection for humans and animals. In order to gain a better understanding of WN transmission cycles, WNV surveillance needs to be implemented in each of the countries. (Résumé d'auteur)

Mots-clés Agrovoc : Virus des animaux, Equidae, Cheval, Épidémiologie, Transmission des maladies, Sérologie, Flavivirus, Morbidité, Genre humain, Animal, Enquête pathologique

Mots-clés géographiques Agrovoc : océan Indien, Madagascar, Maurice, Réunion, Seychelles

Mots-clés complémentaires : Fièvre du Nil occidental

Classification Agris : L73 - Animal diseases

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Agence(s) de financement européenne(s) : European Commission

Auteurs et affiliations

  • Cardinale Eric, CIRAD-BIOS-UMR ASTRE (REU) ORCID: 0000-0002-3434-3541
  • Bernard Camille, Montpellier SupAgro (FRA)
  • Lecollinet Sylvie, ANSES (FRA)
  • Rakotoharinome Vincent Michel, Ministère de l'élevage (Madagascar) (MDG)
  • Ravaomanana Julie, FOFIFA (MDG)
  • Roger M., INRA (FRA)
  • Olive Marie-Marie, CIRAD-ES-UPR AGIRs (FRA)
  • Meenowa Deodass, Ministère de l'agriculture, de la technologie alimentaire et des ressources naturelles (Maurice) (MUS)
  • Jaumally Mahmad Reshad, Ministère de l'agriculture, de la technologie alimentaire et des ressources naturelles (Maurice) (MUS)
  • Melanie Jimmie, MAMR (Seychelles) (SYC)
  • Héraud Jean Michel, Institut Pasteur de Madagascar (MDG)
  • Zientara Stéphan, ANSES (FRA)
  • Cetre-Sossah Catherine, CIRAD-BIOS-UMR ASTRE (REU)

Source : Cirad-Agritrop (

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