Detection and Phylogenetic Characterization of Influenza D in Swedish Cattle

Abstract

Increased evidence suggests that cattle are the primary host of Influenza D virus (IDV) and may contribute to respiratory disease in this species. The aim of this study was to detect and characterise IDV in the Swedish cattle population using archived respiratory samples. This retrospective study comprised a collection of a total 1763 samples collected between 1 January 2021 and 30 June 2024. The samples were screened for IDV and other respiratory pathogens using real-time reverse transcription quantitative PCR (rRT-qPCR). Fifty-one IDV-positive samples were identified, with a mean cycle threshold (Ct) value of 27 (range: 15-37). Individual samples with a Ct value of

Keywords

influenza D virus; cattle; bovine; PCR; Sweden; co-infection; phylogeny; sequencing; reassortment

Published in

Viruses
2025, volume: 17, number: 1, article number: 17
Publisher: MDPI

SLU Authors

• Alvarez Gentil, Ignacio

  • Department of Clinical Sciences, Swedish University of Agricultural Sciences
    

• Hurri, Emma

  • Department of Clinical Sciences, Swedish University of Agricultural Sciences
    
  • National Veterinary Institute (SVA)

• Valarcher, Jean-Francois

  • Department of Clinical Sciences, Swedish University of Agricultural Sciences
    

• Hägglund, Sara

  • Department of Clinical Sciences, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Clinical Science

Publication identifier

• DOI: https://doi.org/10.3390/v17010017

Permanent link to this page (URI)

https://res.slu.se/id/publ/140590