Serological evidence of equine infectious anaemia, West Nile fever, surra and equine piroplasmosis in a herd of horses in northern Argentina

Autor: Gonzalo Polledo, Cécile Beck, Aymeric Hans, Laurent Hébert, F. Lecouturier, Teotimo Becu, Steeve Lowenski, Mariana Giorgi, Philippe Büscher, Karine Laroucau
Přispěvatelé: ANSES, Laboratoire de Santé Animale - site de Dozulé, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Laboratorio de Diagnóstico, Clinica Equina SRL, Virologie UMR1161 (VIRO), École nationale vétérinaire d'Alfort (ENVA)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Department of Biomedical Sciences, Institute of Tropical Medicine [Antwerp] (ITM), ANSESEuropean Commission through DG SANTE
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Veterinary Parasitology : Regional Studies and Reports
Veterinary Parasitology : Regional Studies and Reports, Elsevier, In press, 24, pp.100566. ⟨10.1016/j.vprsr.2021.100566⟩
ISSN: 2405-9390
DOI: 10.1016/j.vprsr.2021.100566⟩
Popis: International audience; Northern Argentina hosts equine populations living under preserved natural areas and extensive breeding conditions, with limited access to veterinary care. Horses can be in contact with i) wildlife considered to be a potential reservoir of horse pathogens (e.g. capybara, coatis and pampas deer) and/or ii) potential disease vectors such as ticks, horse flies, Culicidae and vampire bats. In this context, the aim of this study was to assess the exposure of horses from a herd in northern Argentina to different vector-borne pathogens.Serum samples were collected from 20 horses on a farm in Chaco province. Most of these horses were in good health, but a few showed clinical signs such as fever, neurological signs or emaciation. Potential vectors (ticks, horse flies and Culicidae) were present and a fresh bite of a vampire bat (Desmodus rotundus) was observed on one horse. This serological survey revealed that 100% (20/20) were positive for equine infectious anaemia (EIA), 100% (18/18) for West Nile fever (WNF), 53% (10/19) for surra and 45% (9/20) for equine piroplasmosis (Babesia equi). Among these horses, four were found seropositive for all four infections. On the other hand, all the tested horses were seronegative for equine viral arteritis (EVA), Eastern equine encephalomyelitis (EEE), Venezuelan equine encephalitis (VEE), Western equine encephalomyelitis (WEE) and glanders.The data from this survey conducted on a small number of animals illustrate the need for an effective application of surveillance programmes and control measures for equine diseases in northern Argentina and constitute, to our knowledge, the first report of horses simultaneously seropositive for EIA, WNF, surra and equine piroplasmosis.
Databáze: OpenAIRE
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