1UMR CMAEE - Contrôle des maladies animales exotiques et émergentes (Campus international de Baillarguet - TA A-15 / G - 34398 Montpellier Cedex 5 ou Domaine Duclos - Prise-D'eau - 97170 Petit-Bourg Guadeloupe ou CRVOI - BP 80005 - 2 rue Maxime Rivière - 97491 Sainte-Clotilde Cedex Réunion ou ISRA/LNERV - Route du Front de Terre - BP 2057 - Dakar Hann Sénégal - France)
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.
https://hal-riip.archives-ouvertes.fr/pasteur-01675153
Contributor : Jean-Michel Heraud
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Submitted on : Wednesday, February 28, 2018 - 3:42:00 PM
Last modification on : Monday, August 26, 2019 - 11:38:24 AM
Long-term archiving on : Monday, May 28, 2018 - 4:35:23 PM
E. Cardinale, C. Bernard, S. Lecollinet, V Rakotoharinome, J. Ravaomanana, et al.. West Nile virus infection in horses, Indian ocean. Comparative Immunology, Microbiology and Infectious Diseases, Elsevier, 2017, 53, pp.45 - 49. ⟨10.1016/j.cimid.2017.06.006⟩. ⟨pasteur-01675153⟩
