Isolation of St. Louis Encephalitis Virus in South Brazil

Oscar de Souza Lopes Seção de Virus Transmitidos por Artropodos, Instituto Adolfo Lutz, São Paulo, Brazil

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Lia de Abreu Sacchetta Seção de Virus Transmitidos por Artropodos, Instituto Adolfo Lutz, São Paulo, Brazil

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Terezinha L. M. Coimbra Seção de Virus Transmitidos por Artropodos, Instituto Adolfo Lutz, São Paulo, Brazil

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Luiz Eloy Pereira Seção de Virus Transmitidos por Artropodos, Instituto Adolfo Lutz, São Paulo, Brazil

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Eight strains of a flavivirus identified as St. Louis encephalitis (SLE) virus were isolated from wild rodents, birds, and sentinel mice in three locations in the State of São Paulo, Brazil from 1967–1969. No illness attributable to SLE virus infection was detected among the local inhabitants, although about 5% of the local population had neutralizing antibodies to this virus.

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