Circulation of eastern equine encephalitis, western equine encephalitis, Ilhéus, Maguari and Tacaiuma viruses in equines of the Brazilian Pantanal, South America

• Autor(a) principal: Iversson, Lygia Busch
• Data de Publicação: 1993
• Outros Autores: Silva, Roberto Aguiar M. S, Rosa, Amélia Paes de Andrade Travassos da, Barros, Vera Lúcia Reis Souza de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Digital do Instituto Evandro Chagas (Patuá)
• Texto Completo: https://patua.iec.gov.br/handle/iec/2605
• topic: Encefalomielite Equina / veterinária; Doenças dos Cavalos / epidemiologia; Anticorpos Antivirais; Brasil / epidemiologia; Encefalomielite Equina / epidemiologia; Encefalomielite Equina / imunologia; Encefalomielite Equina / microbiologia; Doenças dos Cavalos / imunologia; Doenças dos Cavalos / microbiologia; Cavalos / microbiologia

Neutralizing antibodies to EEE (6.7 percent), WEE (1.2 percent), ILH (26.6 percent), MAG (28.2 percent) and TCM (15.7 percent) viruses were found in sera of 432 equines of the Brazilian Pantanal, area where undiagnosed horse deaths are frequently observed. A 4-fold rise in CF titer to EEE virus was detected in acute and convalescent sera of an encephalitis horse sacrificed in 1992. Antibodies to EEE, ILH, MAG and TCM viruses were detected in horses less than 2 years old indicating recent circulation of these viruses in the Pantanal. The evidence of recent equine encephalitis associated with rising CF titer to EEE warrants a more intensive study with attempts to isolate virus from horses with clinical manifestations of encephalitis.