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
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2020-12-16
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Universidade Federal de Goiás
Resumo
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.
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SILVA, L. F. 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. 2020. 91 f. Tese (Doutorado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2020.