Molecular analysis of canine circovirus in dogs from animal shelters in Belém, Pará, northern Brazil: first detection at the amazon region


circovirus, diarrhea, dogs, molecular characterization.

How to Cite

Cardoso, B. T. M., de Deus, D. R., Sousa Junior, E. C., Pinheiro, K. da C., da Costa, J. N., Maués, M. A. C., Mesquita , M. J. de F., Teixeira, D. M., Siqueira, J. A. M., Resque, H. R., Gabbay, Y. B., & da Silva, L. D. (2023). Molecular analysis of canine circovirus in dogs from animal shelters in Belém, Pará, northern Brazil: first detection at the amazon region. Brazilian Journal of Veterinary Medicine, 45, e000723.


The canine circovirus (CanCV) is a single-stranded DNA virus that has become an important emerging virus associated with gastroenteritis in dogs worldwide. In the present study, the CanCV was detected by PCR in 15% (22/147) of dogs from animal shelters in Belém, between 2019 and 2020. We observed an association between the CanCV infection and the presence of diarrhea in animals younger than one year of age (p > 0.01). The Brazilian strains were grouped in Chinese genotypes, with 99.54 to 100% nucleotilde homology. The GMRF Bayesian Skyride used the molecular clock model, which was the best suited technique to plot the dataset. The most recent common ancestor (TMRCA) was estimated in 2017, with the evolution rate of 1.6 x 10-3 s/s/y. The viral family diversity was also investigated, with emphasis on the families of the enteric pathogenic viruses Parvoviridae, Picornaviridae and Astroviridae, which were detected in the CanCV positive pooled samples. This study highlights the importance of the CanCV as an emergent virus that causes diarrhea in Brazilian dogs. The results found herein contribute to the understanding of the role of CanCV in enteric diseases and in the evolutionary molecular characterization of the circulating genotypes. Furthermore, we increased the understanding of the fecal virome in dogs with diarrhea, providing data for the monitoring and prevention viral gastroenteric diseases in domestic animals.


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Copyright (c) 2023 Bruna Trindade Moreira Cardoso, Danielle Rodrigues de Deus, Edivaldo Costa Sousa Junior, Kenny da Costa Pinheiro, Jonaia Novaes da Costa, Marcelino Antonio Costa Maués, Márcia Janete de Fátima Mesquita , Dielle Monteiro Teixeira, Jones Anderson Monteiro Siqueira, Hugo Reis Resque, Yvone Benchimol Gabbay, Luciana Damascena da Silva