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Seroprevalence of horses to Coxiella burnetii in an Q fever endemic area

Desjardins Isabelle, Joulié Aurélien, Pradier Sophie, Lecollinet Sylvie, Beck Cécile, Vial Laurence, Dufour Philippe, Gasqui Patrick, Legrand Loïc, Edouard Sophie, Sidi-Boumedine Karim, Rousset Elodie, Jourdain Elsa, Leblond Agnès. 2018. Seroprevalence of horses to Coxiella burnetii in an Q fever endemic area. Veterinary Microbiology, 215 : pp. 49-56.

Journal article ; Article de revue à facteur d'impact
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Quartile : Q1, Sujet : VETERINARY SCIENCES / Quartile : Q3, Sujet : MICROBIOLOGY

Abstract : Coxiella burnetii can infect many animal species, but its circulation dynamics in and through horses is still unclear. This study evaluated horse exposure in an area known to be endemic for ruminants and humans. We assessed antibody prevalence in horse serum by ELISA, and screened by qPCR horse blood, ticks found on horses and dust from stables. Horse seroprevalence was 4% (n = 335, 37 stables) in 2015 and 12% (n = 294, 39 stables) in 2016. Of 199 horses sampled both years, 13 seroconverted, eight remained seropositive, and one seroreverted. Seropositive horses were located close to reported human cases, yet none displayed Q fever-compatible syndromes. Coxiella DNA was detected in almost 40% of collected ticks (n = 59/148 in 2015; n = 103/305 in 2016), occasionally in dust (n = 3/46 in 2015; n = 1/14 in 2016) but never in horse blood. Further studies should be implemented to evaluate if horses may be relevant indicators of zoonotic risk in urban and suburban endemic areas. (Résumé d'auteur)

Mots-clés Agrovoc : Coxiella burnetii, Cheval, Fièvre q, Enquête pathologique, Sérologie, Anticorps, Identification, Morbidité, Test ELISA, PCR, Zoonose, Maladie de l'homme, Analyse du risque

Classification Agris : L73 - Animal diseases
000 - Autres thèmes
U40 - Surveying methods

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

Auteurs et affiliations

  • Desjardins Isabelle, Université de Lyon (FRA)
  • Joulié Aurélien, Université de Lyon (FRA)
  • Pradier Sophie, ENVT (FRA)
  • Lecollinet Sylvie, ANSES (FRA)
  • Beck Cécile, ANSES (FRA)
  • Vial Laurence, CIRAD-BIOS-UMR ASTRE (FRA)
  • Dufour Philippe, ANSES (FRA)
  • Gasqui Patrick, INRA (FRA)
  • Legrand Loïc, Université de Caen (FRA)
  • Edouard Sophie, Université Aix-Marseille (FRA)
  • Sidi-Boumedine Karim, ANSES (FRA)
  • Rousset Elodie, ANSES (FRA)
  • Jourdain Elsa, INRA (FRA)
  • Leblond Agnès, INRA (FRA) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/587176/)

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