https://www.scienceopen.com/hosted-document?doi=10.15212/ZOONOSES-2025-0002
Announcing a new article publication for
Zoonoses journal. Caliciviruses are associated with several disease symptoms, such as diarrhea, respiratory infections, vesicular lesions, reproductive failure, and fatal hemorrhagic disease in animals. Novel disease-causing caliciviruses continue to be discovered in mammals.
Through a metagenomics approach, a novel calicivirus was identified and genetically characterized in swab samples from the noses, throats, and anuses of walruses (
Odobenus rosmarus) with diarrhea in Qingdao Polar Haichang Ocean Park, China, between April and December 2018.
The genomic sequence of the novel walrus calicivirus CV-HMU-1 was 7,172 nt long and included two complete open reading frames (ORFs) encoding classical calicivirus NS protein amino acid motifs. Phylogenetic analysis based on amino acid sequences including viral protein 1 (VP1) and viral protein 2 (VP2) from representatives of 11 known genera confirmed that CV-HMU-1 is a new member of the
Salovirus genus of the
Caliciviridae family. The non-structural (NS) CV-HMU-1 shared 75.68% and 64.68% amino acid identity with
Atlantic salmon calicivirus and
Ameiurus nebulosus calicivirus 1, respectively, which are also
Salovirus species. However, further research is needed to verify the direct link between CV-HMU-1 and diarrhea.
CV-HMU-1 is proposed as a novel
Caliciviridae species. These findings not only expand virological classification but also indicate evolutionary links in calicivirus transmission between terrestrial and marine mammal hosts.
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Zoonoses is fully open access journal for research scientists, physicians, veterinarians, and public health professionals working on diverse disciplinaries of zoonotic diseases. Please visit
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Zoonoses is now open for submissions; articles can be submitted online at
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eISSN 2737-7474
ISSN 2737-7466
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Yi Huang, Zihan Li and Dan Ren et al. Identification of a Novel Calicivirus in Walrus (Odobenus Rosmarus).
Zoonoses. 2025. Vol. 5(1). DOI: 10.15212/ZOONOSES-2025-0002