Some epidemiologic aspects of foot and mouth disease in the zona da mata state of minas gerais brazil

Ribeiro, M.F.B.; Santos, J.L.D.; Faria, J.E.D.; Dale, R.; Patarroyo, J.H.

Arquivo Brasileiro de Medicina Veterinaria e Zootecnia 37(6): 561-568


ISSN/ISBN: 0102-0935
Accession: 006442591

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An epidemiologic study was carried out in the "Zona da Mata", State of Minas Gerais (Brazil), to verify the behaviour of the Foot-and-Mouth disease (FMD) in different homogeneous microregions. A total of 828 bovine serum samples were tested through the gel diffusion technique. The average prevalence rate (7.5%) of antibodies against VIA varied according to the different microregions, i.e., from 2.8% in "Mata de Cataguases" to 17.1% in "Mata de Uba". Forty-four (7.6%) out of the 579 properties examined showed reagent animals. The Animal Health Institute (IESA) in the State of Minas Gerais registered from 1979 to 1982 in the "Zona da Mata", 88 outbreaks of vesicular diseases from which only 28 (31.8%) were submitted to laboratorial analyses. The A virus was diagnosed in 26 (92.9%) and the O virus in 2 (7.1%) of the outbreaks.