Canine Coronavirus Epidemiology and Molecular Characterization

Canine coronavirus (CCoV) encompasses a group of positive-sense RNA viruses within the Alphacoronavirus genus that primarily infect the gastrointestinal and, in certain variants, respiratory tracts of domestic dogs and related canids. Two main genotypes, CCoV-I and CCoV-II, share high overall genomic similarity but diverge significantly within the spike glycoprotein gene, a key determinant of host cell entry and antigenic profile. Ongoing molecular surveillance has revealed recombinant lineages derived from interspecies exchanges with feline and porcine coronaviruses, most notably within the N-terminal domain of the spike protein. These recombination events underpin the emergence of novel subtypes, some of which display enhanced pathogenicity and systemic tropism, termed pantropic CCoVs. Epidemiological investigations indicate a global distribution with variable prevalence influenced by factors such as host age, housing conditions and geographic region. Outbreaks of severe enteric disease, occasional systemic infections and rare zoonotic spill-over events underscore the necessity of integrated surveillance. Advances in whole-genome sequencing and phylogenetic analysis have facilitated detailed characterisation of viral diversity and transmission dynamics, while in vitro studies of receptor engagement and antiviral compounds offer promising avenues for therapeutic intervention and vaccine design.

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Canine Coronavirus Epidemiology and Molecular Characterization publication trend

The graph below shows the total number of articles in canine coronavirus epidemiology and molecular characterization across all publications each year (not limited to Nature Index journals).

Technical terms

Alphacoronavirus: A genus of single-stranded RNA viruses that includes canine, feline and porcine coronaviruses, distinguished by genetic and antigenic traits.

Spike protein: A surface glycoprotein that mediates viral attachment and entry into host cells, and a primary target for neutralising antibodies.

Recombination: A molecular process in which segments of RNA genome are exchanged between related viruses during co-infection, generating novel genomic constellations.

Pantropic: Describing viral strains capable of disseminating beyond the primary site of infection (for example, from the gut to internal organs).

Open reading frame (ORF): A continuous stretch of nucleotides in a viral genome that can be translated into a protein product.

References

1. Discovery and identification of a novel canine coronavirus causing a diarrhea outbreak in Vulpes. Science Bulletin (2023).
2. Cross-species recognition of two porcine coronaviruses to their cellular receptor aminopeptidase N of dogs and seven other species. PLOS Pathogens (2025).
3. In Vitro Evaluation of Antiviral Activities of Funicone-like Compounds Vermistatin and Penisimplicissin against Canine Coronavirus Infection. Antibiotics (2023).
4. A One Health Perspective on Canine Coronavirus: A Wolf in Sheep’s Clothing?. Microorganisms (2023).
5. A systematic review and meta-analysis of canine enteric coronavirus prevalence in dogs of mainland China. Virology Journal (2024).
6. Canine Enteric Coronaviruses: Emerging Viral Pathogens with Distinct Recombinant Spike Proteins. Viruses (2014).
7. Animal alphacoronaviruses found in human patients with acute respiratory illness in different countries.. Emerging Microbes & Infections (2022).
8. Circulation of pantropic canine coronavirus in autochthonous and imported dogs, Italy. Transboundary and Emerging Diseases (2020).