Aspectos epidemiológicos e clínico-patológicos das poxviroses de bovinos no Estado de Goiás (2010-2018) e soroprevalência de vaccínia bovina em bovinos no Distrito Federal

• Ano de defesa: 2020
• Autor(a) principal: Silva, Lorena Ferreira
• Orientador(a): Sant’Ana, Fabiano José Ferreira de
• Banca de defesa: Sant’Ana, Fabiano José Ferreira de, Noronha Filho, Antônio Dionísio Feitosa, Sonne, Luciana, Flores, Eduardo Furtado, Borges, José Renato Junqueira
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Programa de Pós-graduação em Ciência Animal (EVZ)
• Departamento: Escola de Veterinária e Zootecnia - EVZ (RG)
• País: Brasil
• Palavras-chave em Português: Doenças vesiculares bovinas; Centro-oeste brasileiro; Epidemiologia; Orthopoxvírus bovino; Parapoxvírus bovino
• Palavras-chave em Inglês: Bovine vesicular diseases; Brazilian midwest; Epidemiology; Bovine orthopoxvirus; Bovine parapoxvirus
• Área do conhecimento CNPq: CIENCIAS AGRARIAS::MEDICINA VETERINARIA::PATOLOGIA ANIMAL
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/11054

Based on the importance and in the scarce literature about poxviruses in cattle in Brazilian Midwestern, the current study aimed to determine the seroprevalence of vaccinia virus (VACV) in cattle of Distrito Federal (DF) (2015-2016) and to describe the epidemiological, clinical and pathological aspects of officialy notified cases of poxviruses in cattle of Goiás State (GO), Brazil (2010-2018). The samples used in this study from DF and GO were kindly provided by Secretaria de Agricultura, Abastecimento e Desenvolvimento Rural (Seagri-DF) from DF and by Agência Goiana de Defesa Agropecuária (Agrodefesa), respectively. In the first study, samples of sera of 312 cows from 64 herds were tested by virus-neutralizing test (VN) for bovine vaccinia (BV) antibodies. Estimated prevalences of 33.3% (herds) and 10.6% (animals) were observed. No risk factor with biological relevance was associated with seropositivity to BV. In the second study, during the evaluation period, 33 suspected cases/outbreaks of vesicular diseases in cattle were notified. Twenty-five out of these cases were confirmed as associated with poxviruses: 13 BV, 6 pseudocowpox, 5 bovine papular stomatitis and 1 coinfection (VACV and Orf virus-like parapoxvirus). Most cases occurred in the dry season of the respective years, between the months of June and September. Main lesions included vesicles, ulcers, crusts, papules and scars. These lesions affected mainly the teats and udder of dairy cows. Main lesions in calves consisted of ulcers in the mouth and muzzle. There were concomitant cases with similar lesions in humans that worked closely with the infected cattle. The results of this study demonstrate that different poxviruses (mainly BV) infect cattle in part of the Midwestern Brazil, with zoonotic potencial, mainly in dairy farms, but also present on beef herds. As a result, these diseases require vigilance by the oficial veterinary and local public health service.