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Characterization of Influenza D Virus in Danish Calves. | LitMetric

Characterization of Influenza D Virus in Danish Calves.

Viruses

Department of Veterinary and Animal Sciences, University of Copenhagen, 1870 Frederiksberg, Denmark.

Published: February 2022

AI Article Synopsis

  • Influenza D virus (IDV), first identified in 2011, primarily affects cattle and swine, with a study conducted in Denmark collecting nasal swabs from 100 calf herds between 2018 and 2020, finding IDV in 12 herds.
  • Selected samples for full genome sequencing showed that viruses from seven positive herds were related to the D/OK lineage, clustering with a 2015 Danish IDV, while four others belonged to the D/660 lineage, indicating diverse genetic relationships.
  • The study highlighted that genetic similarities between viruses from herds that traded calves imply the virus may spread through calf movement, marking the first detailed investigation of IDV in Danish calves.

Article Abstract

Influenza D virus (IDV) was first described in 2011 and has been found to mainly circulate among cattle and swine populations worldwide. Nasal swab samples were collected from 100 Danish calf herds (83 dairy and 17 veal herds) from 2018-2020. Influenza D virus was detected in 12 of the herds. Samples with the lowest cycle quantification value were selected for full genome sequencing. A hemagglutinin-esterase fusion (HEF) gene sequence from a Danish IDV collected in 2015 was also included in this study. Phylogenetic analysis showed that viruses from seven of the IDV-positive herds belonged to the D/OK lineage and clustered together in the HEF tree with the IDV collected in 2015. Viruses from the four other herds belonged to the D/660 lineage, where three of the viruses clustered closely together, while the fourth virus was more phylogenetically distant in all gene segments. The high level of genetic similarity between viruses from two different herds involved in calf trading suggests that transmission occurred through the movement of calves. This study is, to our knowledge, the first to describe the characterization of IDV in calves in Denmark.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8880214PMC
http://dx.doi.org/10.3390/v14020423DOI Listing

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