Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1187465
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dc.contributor.authorSÁ, J. J. S.
dc.contributor.authorMARIAN, L.
dc.contributor.authorWITHOEFT, J. A.
dc.contributor.authorARANDA, V. M. P. T.
dc.contributor.authorMILETTI, L. C.
dc.contributor.authorCASTRO, L. T.
dc.contributor.authorDRIEMEIER, D.
dc.contributor.authorCARON, L.
dc.contributor.authorCASAGRANDE, R. A.
dc.date.accessioned2026-06-10T21:20:06Z-
dc.date.available2026-06-10T21:20:06Z-
dc.date.created2026-06-10
dc.date.issued2026
dc.identifier.citationPesquisa Veterinária Brasileira, v. 46, e07761, 2026.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1187465-
dc.descriptionABSTRACT: Swinepox (SWPV), caused by Suipoxvirus, primarily affects pigs and typically presents progressive skin lesions. This study aims to describe and characterize an outbreak of SWPV on four subsistence-farming properties in the state of Santa Catarina, South region of Brazil. Clinical, histopathological, molecular, and immunohistochemical analyses were performed on skin samples from one pig per property. The outbreak involved four subsistence pig farms, affecting the herds with proliferative, crusted skin lesions. Skin samples from four pigs, one from each property, were collected and routinely processed for histopathological analysis. Immunohistochemistry (IHC) was performed using the peroxidase method with a polyclonal vaccinia virus antibody, and the Max Polymer Detection System was utilized. Frozen skin fragments underwent polymerase chain reaction (PCR) for Suipoxvirus, targeting the FP-DNApol/RP-DNApol sequences, amplifying 543 base pairs. Sequencing and phylogenetic analysis were performed using the Sanger method. The farm facilities were located near water reservoirs, where constant flies and mosquitoes plagued. The number of affected pigs was 14, 9, 21 and 2, respectively, in the four farms, resulting in 98% morbidity; however, no pig died. Macroscopically, erythematous and crusted lesions with a crateriform appearance were observed on the dorsal, ventral and limb regions, as well as the face, ears, and snout, associated with intense pruritus. Histopathology revealed proliferative pustular ulcerative dermatitis with eosinophilic intracytoplasmic inclusion bodies. The IHC showed positivity in the cytoplasm of epithelial cells for poxvirus 1/4, and the PCR was positive for SWPV in 3/4 cases. The phylogenetic analysis revealed 75% similarity with previously described Brazilian strains. After three weeks, the affected animals experienced spontaneous recovery from the disease. This study emphasizes the significance of disease monitoring in subsistence pig farming, particularly for differential diagnoses, as the observed lesions are suggestive of other viral agents, such as foot-and-mouth disease.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectViral dermatitis
dc.titleOutbreak of swinepox in subsistence pig herds in Santa Catarina state, Brazil.
dc.typeArtigo de periódico
dc.subject.thesagroProdução Animal
dc.subject.thesagroSuinocultura
dc.subject.thesagroDermatite
dc.subject.thesagroVírus
dc.subject.nalthesaurusAnimal pathology
dc.subject.nalthesaurusSwine
riaa.ainfo.id1187465
riaa.ainfo.lastupdate2026-06-10
dc.identifier.doi10.1590/1678-5150-PVB-7761
dc.contributor.institutionJENNYFER JÚLIA S. SÁ, UNIVERSIDADE DO ESTADO DE SANTA CATARINA; LUCAS MARIAN, UNIVERSIDADE DO ESTADO DE SANTA CATARINA; JÉSSICA A. WITHOEFT, UNIVERSIDADE DO ESTADO DE SANTA CATARINA; VITTORIA MILENI P. T. ARANDA, UNIVERSIDADE DO ESTADO DE SANTA CATARINA; LUIZ C. MILETTI, UNIVERSIDADE DO ESTADO DE SANTA CATARINA; LUCAS T. CASTRO, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; DAVID DRIEMEIER, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; LUIZINHO CARON, CNPSA; RENATA A. CASAGRANDE, UNIVERSIDADE DO ESTADO DE SANTA CATARINA.
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