Section 6
Chapter 5,176

Distribution and prevalence of precipitating antibodies to aujeszkys disease virus in swine herds in the state of santa catarina brazil

Romero, C.H.; Rowe, C.A.; Provenzano, G.I.; Floris, R.S.; Brentano, L.; Marques, J.L.L.

Pesquisa Veterinaria Brasileira 4(4): 123-127


ISSN/ISBN: 0100-736X
Accession: 005175407

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A seroepidemiological survey utilizing the plate immunodiffusion (ID) test for the detection of antibodies in the serum of Aujeszky's disease virus (ADV) was performed in swine herds in the State of Santa Catarina. A total of 9,303 sera were tested of which 6,521 sera were obtained from 67 (89.3%) of 75 existing breeding herds in Santa Catarina distributed in 30 municipalities. Sixty four (1%) of the latter sera belonging to 6 herds contained detectable antibodies, with clinical Aujeszky's disease (AD) being diagnosed in 2 of the herds. Similar ID tests performed on sera obtained from 377 young shoats from 5 of 6 Pedigree Testing Stations existing in Santa Catarina and distributed in 5 municipalities were all negative, while 4 infected boars were found of 19 tested in an Artificial Insemination (AI) Center. When the same testing procedure was applied to 2386 sera from 10fattening herds located in 4 municipalities, antibodies were detected in 61 (2.6%) sera, all derived from 3 herds with history of AD mortality. Thus, ADV infection of breeding herds in the State of Santa Catarina is sporadic in nature, nonendemic, very restricted in distribution and presently under control, due to the surveillance program recently implemented. The finding of infected animals of European origin in an AI center shows the weakness of the international sanitary police and the dangers involved in the importation of foreign stock. More work is needed to determine the real prevalence and distribution of ADV in fattening herds.

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