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Mortari APG, Masuda EK, Flores MM, Flores EF, Cargnelutti JF, Vogel FSF. Coinfection with canine distemper virus and canine circovirus in a dog in Brazil. Braz J Microbiol 2022; 53:2315-2320. [PMID: 35881236 PMCID: PMC9679085 DOI: 10.1007/s42770-022-00803-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/19/2022] [Indexed: 01/13/2023] Open
Abstract
Canine distemper virus (CDV) and canine circovirus (CanineCV) have been described worldwide in multi-systemic disease in dogs. Both agents may be occasionally associated with other viral pathogens, but reports of coinfection by CDV and CanineCV associated with disease are rare. In this article, we report a coinfection between CDV and CanineCV detected during an investigation of viral agents involved in multisystemic disease in dogs in Southern Brazil. Molecular testing by PCR in lungs and intestines of 77 dogs necropsied in pathology services (2015-2020) revealed several single and mixed viral infections, including a CDV/CanineCV coinfection. In the case reported here, gross and histological findings were compatible with CDV pathology (bronchointerstitial pneumonia and viral intracytoplasmatic inclusions in pneumocytes and transitional epithelial cells of urinary bladder). CanineCV DNA and CDV antigens were detected in lung and intestine fragments by PCR and immunohistochemistry, respectively. CanineCV PCR amplicons subjected to nucleotide sequencing showed > 98.6% nucleotide identity with CanineCV sequences from GenBank. Although the role of CanineCV in the pathogenesis of the reported case could not be determined, our results show that CanineCV may be associated with other viral infections in cases of multisystemic disease in dogs. These results reinforce the circulation of CanineCV in dogs in Brazil and highlight the importance of including this virus in the list of differential diagnoses of respiratory and gastroenteric infectious diseases in dogs.
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Affiliation(s)
- Ana Paula G. Mortari
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande do Sul 97105-900 Brazil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria, Av. Roraima, 1000 Rio Grande do Sul Santa Maria, Brazil
| | - Eduardo K. Masuda
- Laboratório Axys Análises, Alberto Silva, 332, Porto Alegre, Rio Grande do Sul 91370-000 Brazil
| | - Mariana M. Flores
- Laboratório de Patologia Veterinária (LPV), Departamento de Patologia, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul 97105-900 Brazil
| | - Eduardo F. Flores
- Setor de Virologia (SV), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63A, Santa Maria, Rio Grande do Sul 97105-900 Brazil
| | - Juliana F. Cargnelutti
- Laboratório de Bacteriologia (LABAC), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande do Sul 97105-900 Brazil
| | - Fernanda S. F. Vogel
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande do Sul 97105-900 Brazil
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