Title (eng)

Epidemiology and Clinical Manifestation of West Nile Virus Infections of Equines in Hungary, 2007-2020


Orsolya Eszter Fehér   University of Veterinary Medicine Budapest

Orsolya Korbacska-Kutasi   University of Veterinary Medicine Vienna / University of Veterinary Medicine Budapest

Otto Szenci   University of Veterinary Medicine Budapest

Zsombor Wagenhoffer   University of Veterinary Medicine Budapest

Ákos Jerzsele   University of Veterinary Medicine Budapest

Péter Malik   National Food Chain Safety Office

Petra Forgách   University of Veterinary Medicine Budapest

Csenge Hanna Tolnai   University of Veterinary Medicine Vienna

Péter Fehérvári   University of Veterinary Medicine Budapest / Semmelweis University



Description (eng)

West Nile virus (WNV) is an emerging pathogen in Hungary, causing severe outbreaks in equines and humans since 2007. The aim of our study was to provide a comprehensive report on the clinical signs of West Nile neuroinvasive disease (WNND) in horses in Hungary. Clinical details of 124 confirmed equine WNND cases were collected between 2007 and 2019. Data about the seasonal and geographical presentation, demographic data, clinical signs, treatment protocols, and disease progression were evaluated. Starting from an initial case originating from the area of possible virus introduction by migratory birds, the whole country became endemic with WNV over the subsequent 12 years. The transmission season did not expand significantly during the data collection period, but vaccination protocols should be always reviewed according to the recent observations. There was not any considerable relationship between the occurrence of WNND and age, breed, or gender. Ataxia was by far the most common neurologic sign related to the disease, but weakness, behavioral changes, and muscle fasciculation appeared frequently. Apart from recumbency combined with inappetence, no other clinical sign or treatment regime correlated with survival. The survival rate showed a moderate increase throughout the years, possibly due to the increased awareness of practitioners.

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Lineage 2; Neurologic Disease; Horses; Encephalomyelitis; Fever; Outbreak; Serum; Classification; Encephalitis; Circulation

Member of the Collection(s) (1)

o:605 Publications / University of Veterinary Medicine Vienna