Detection of a novel Shamonda Orthobunyavirus in dairy cattle, France, June 2026
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.
Authors
- Nicolas Herman (ORCID: https://orcid.org/0000-0001-5795-3257)
- Jean‐Luc Guérin (ORCID: https://orcid.org/0000-0001-7770-4012)
- Guillaume Croville (ORCID: https://orcid.org/0000-0001-7577-2089)
- Aurélie Sécula (ORCID: https://orcid.org/0000-0002-4415-9369)
- Maxime Fusade-Boyer (ORCID: https://orcid.org/0000-0002-7613-6751)
- Benjamin Linard (ORCID: https://orcid.org/0000-0002-5555-898X)
- F. Schelcher (ORCID: https://orcid.org/0000-0001-8822-4292)
- Delphine Chrétien (ORCID: https://orcid.org/0000-0003-0034-8739)
- Mikaïl Kelleci
- Elodie DURAND
- Pierre Bessière
- Mathias Mircovich
- Stephan Zientara
Institutions
- École Nationale Vétérinaire d'Alfort (FR)
- École Nationale Vétérinaire de Toulouse (FR)
- Institut National des Sciences Appliquées de Toulouse (FR)
- Institut National Polytechnique de Toulouse (FR)
- Clinique des Cèdres (FR)
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (FR)
- Interactions hôtes-agents pathogènes (FR)
Publication Details
- Journal
- Eurosurveillance
- Published
- 2026-08-20
- DOI
- https://doi.org/10.2807/1560-7917.es.2026.31.33.2600689
- Primary Topic
- Vector-Borne Animal Diseases
- Type
- article
- Field-Weighted Citation Impact
- 0.00