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First evidence of exposure to West Nile Virus in horses within Denmark, 2025

Year: 2026
Type: article
Abstract: A nationwide serological screening of 822 horses was conducted in Autumn 2025 to investigate potential exposure to West Nile Virus (WNV) within Denmark. Serum samples were tested for antibodies against WNV, tick-borne encephalitis virus (TBEV) and Usutu virus (USUV). Four horses without any history of travel outside of Denmark, or previous vaccination against WNV, tested positive for WNV neutralising antibodies. The results support local exposure to WNV indicating that virus infected mosquitoes have been present in Denmark and underline the usefulness of horses as sentinels for the risk of human exposure.
Source: One Health
DOI: 10.1016/j.onehlt.2026.101505
Authors: Pia Ryt-Hansen, Camilla E. Kallehauge-Larsen, Gaëlle Gonzalez, Camille Victoire Migné, Lars Erik Larsen, Laura Vebæk Gelskov, Louise Lohse, Sanni Hansen, Ann Sofie Olesen
Institutions: University of Copenhagen, École Nationale Vétérinaire d'Alfort, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Agence Nationale de Sécurité Sanitaire de l’Alimentation, de l’Environnement et du Travail, Virologie, Statens Serum Institut
Language: English
Field: Medicine
Open Access status: gold
Estimated APC paid: $3,080
OpenAlex ID: W7166535396
FWCI:
Cites: 16
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