Seroprevalence of holders farms for eastern equine encephalitis and western equine encephalomyelitis in Uruará Municipality, Pará State, Northen Brazil

Marcos Bryan Heinemann; Maria do Carmo C. Souza; Adriana Cortez; Fernando Ferreira; Valéria Stacchini Ferreira Homem; José Soares Ferreira-Neto; Rodrigo Martins Soares; Elenice Maria Sequetin Cunha; Leonardo José Richtzenhain

Seroprevalence of holders farms for eastern equine encephalitis and western equine encephalomyelitis in Uruará Municipality, Pará State, Northen Brazil | Soroprevalência da encefalomielite eqüina do leste e do oeste no Município de Uruará, PA, Brasil

2006

The aim of this study was to verify the prevalence of herds with EEEV and WEEV infected animals, in Uruará municipal district, Pará State-Brazil. In view of that, the serum neutralization test was utilized. The following prevalence of positive herds were observed: 17 positive herds for EEEV out of 32 herds, therefore, prevalence is 53.12% (IC 35.03 - 70.49%). One positive herd was found for WEEV out of the 32 studied herds, thus performing 3.12% (IC 0.16 - 18.00%) prevalence. The prevalence of serum reactors animals were observed: 27,37% (IC 15,33 - 39,21%), WEE 1,05% (IC 0,06 - 6,78%).

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O objetivo do presente foi estimar a soroprevalência de anticorpos contra o vírus da EEE e da WEE utilizando como unidades de análise os eqüídeos e as propriedades rurais do tipo familiar do município de Uruará, PA. Os anticorpos contra o vírus das EEE e da WEE foram pesquisados pela microtécnica de soroneutralização. As seguintes prevalências de animais sororeatores para os diferentes vírus foram observadas: EEE 27,37% (IC 15,33 - 39,21%), WEE 1,05% (IC 0,06 - 6,78%). Para as propriedades obtivemos as seguintes prevalências: EEE 53,12% (IC 35,03 - 70,49%), WEE 3,12% (IC 0,16 - 18,00%).

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