Evidence map›Paper›PMID 42440749›Full record

ArticleOne health (Amsterdam, Netherlands)2026

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

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

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in One health (Amsterdam, Netherlands), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Pia Ryt-HansenDepartment of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg C, Denmark.
Camilla E Kallehauge-LarsenDepartment of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg C, Denmark.
Gaëlle GonzalezANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR 1161 Virologie, Laboratoire de Santé Animale, Maison-Alfort, France.
Camille Victoire MignéANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR 1161 Virologie, Laboratoire de Santé Animale, Maison-Alfort, France.
Lars Erik LarsenDepartment of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg C, Denmark.
Laura Vebæk GelskovDepartment of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg C, Denmark.
Louise LohseSection for Veterinary Virology, Department of Virology & Microbiological Preparedness, Statens Serum Institut, Copenhagen, Denmark.
Sanni HansenDepartment of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Taastrup, Denmark.
Ann Sofie OlesenSection for Veterinary Virology, Department of Virology & Microbiological Preparedness, Statens Serum Institut, Copenhagen, Denmark.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

HorsesOrthoflavivirusSeroprevalenceVector-borneWest Nile virusZoonosis

Identifiers

PMID42440749
PMCPMC13334394

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.