Evidence for current circulation of an ancient West Nile virus strain (NY99) in Brazil

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Data

2021-01-01

Autores

Lima Siconelli, Marcio Junio
Melo Jorge, Daniel Macedo de
Castro-Jorge, Luiza Antunes de
Fonseca-Junior, Antonio Augusto
Nascimento, Mateus Laguardia
Floriano, Vitor Goncalves
Souza, Fransergio Rocha de
Queiroz-Junior, Eudson Maia de
Camargos, Marcelo Fernandes
Lara Costa, Eliana Dea

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ISSN da Revista

Título de Volume

Editor

Soc Brasileira Medicina Tropical

Resumo

Introduction: In Brazil, West Nile virus (WNV) was first detected, in 2018, in horses with neurological disease. Aim: We report the first case of WNV infection in a horse from Ceara state and the complete genome sequence of an isolate from Espirito Santo state. Both infections occurred in 2019. Methods: WNV was isolated from the tissues of a horse with neurological signs in Espirito Santo and sequenced by MiSeq. Results: Phylogenetic analysis revealed that the isolate belongs to lineage 1a, clustering with the NY99 strain, a strain that has not circulated in the USA since 2005. Conclusions: Our findings reinforce the hypothesis that WNV has been silently circulating in Brazil for many years.

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Palavras-chave

West nile virus, NY99 strain, Horses

Como citar

Revista Da Sociedade Brasileira De Medicina Tropical. Brasilia: Soc Brasileira Medicina Tropical, v. 54, 5 p., 2021.