1887

Abstract

Astro- and kobuviruses infect both humans and animals. Here, we report on the disease history, detection and genomic characterization of novel astro- and kobuviruses from fatal diarrhoea of two juvenile grey squirrels. The virus particles had enterovirus-like morphology and a diameter of 28–32 nm. Next-generation sequencing confirmed astro- and kobuviruses and sequence analysis revealed typical astrovirus and picornavirus genome organizations. The astrovirus ORF2 sequence clustered with a clade of unassigned astroviruses, with marmot and rodent mamastroviruses as closest relatives. For the kobuvirus, divergences greater than 49.4 % for P1 and 43.5 % in the non-structural proteins indicated a novel species. However, phylogenetic analysis of the 3D polymerase showed that it clustered with that of the newly classified ludopivirus A1, suggesting a previous recombination event in the evolution of the kobuvirus. Our data provide further insights into the diversity of astro- and kobuviruses and broaden the spectrum of viruses infecting grey squirrels.

Funding
This study was supported by the:
  • Horizon 2020 (Award 773830)
    • Principle Award Recipient: Not Applicable
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2020-05-27
2024-03-28
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