Detection of a novel Shamonda Orthobunyavirus in dairy cattle, France, June 2026

Eurosurveillance 2026 Open access

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Authors: Mikaïl Kelleci, Maxime Fusade-Boyer, Delphine Chrétien, Elodie Durand, Mathias Mircovich, Aurélie Sécula, Benjamin Linard, Nicolas Herman, François Schelcher, Guillaume Croville, Stephan Zientara, Pierre Bessière
+1 more Jean‐Luc Guérin
DOI: 10.2807/1560-7917.es.2026.31.33.2600689
Cited by: 1
References: 13

Abstract

In June 2026, acute fever, diarrhoea, lethargy and marked reduction of milk yield were reported in dairy cattle in eastern France. Unbiased Nanopore metagenomics on pooled plasma from affected cows detected Simbu serogroup Orthobunyavirus, provisionally named European Shamonda Virus, and recovered complete genomes. Segments L and M clustered with Nigerian Shamonda virus, whereas S showed a distinct clustering pattern, suggesting high mutation rate or reassortment. Similar findings in neighbouring countries indicate cross-border emergence requiring coordinated surveillance.

Fields of Study & Subjects

Vector-Borne Animal Diseases Viral Infections and Vectors Animal Disease Management and Epidemiology

Publication details

Journal / source
Eurosurveillance
Publisher
European Centre for Disease Control and Prevention (ECDC)
Volume
31
Issue
33
Publication date
20 August 2026
Language
EN