West Nile Virus in the state of Ceará, northeast Brazil

Abstract: In June 2019, a horse with neurological disorder was diagnosed with West Nile virus (WNV) in Boa Viagem, a municipality in the state of Ceará, northeast Brazil. A multi-institutional task force coordinated by the Brazilian Ministry of Health was deployed to the area for case investigation....

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Autores: Chalhoub, Flávia Lowen Levy, Queiroz Júnior, Eudson Maia de, Duarte, Bruna Holanda, Sá, Marcos Eielson Pinheiro de, Lima, Pedro Cerqueira, Oliveira, Ailton Carneiro de, Casseb, Lívia Medeiros Neves, Chagas, Liliane Leal das, Monteiro, Hamilton Antônio de Oliveira, Neves, Maycon Sebastião Alberto Santos, Chaves, Cyro Facundo, Maura, Paulo Jean da Silva, Nascimento, Aline Machado Rapello do, Pinheiro, Rodrigo Giesbrecht, Vieira, Antonio Roberio Soares, Moura, Francisco Bergson Pinheiro, Silva, Luiz Osvaldo Rodrigues da, Escóssia, Kiliana Nogueira Farias da, Sousa, Lindenberg Caranha de, Ramalho, Izabel Leticia Cavalcante, Silva, Antônio Williams Lopes da, Mello, Leda Maria Simões, Souza, Fábio Felix de, Almeida, Francisco das Chagas, Rodrigues, Raí dos Santos, Chagas, Diego do Vale, Brito, Anielly Ferreira de, Cavalcante, Karina Ribeiro Leite Jardim, Mares-Guia, Maria Angélica Monteiro de Mello, Campos, Vinícius Martins Guerra, Faria, Nieli Rodrigues da Costa, Vieira, Marcelo Adriano da Cunha e Silva, Mendonça, Marcos Cesar Lima de, Pivisan, Nayara Camila Amorim de Alvarenga, Moreno, Jarier de Oliveira, Vieira, Maria Aldessandra Diniz, Gomes, Ricristhi Gonçalves de Aguiar, Araújo, Fernanda Montenegro de Carvalho, Passos, Pedro Henrique de Oliveira, Ramos, Daniel Garkauskas, Romano, Alessandro Pecego Martins, Martins, Lívia Caricio, Oliveira, Ricardo Lourenço de, Filippis, Ana Maria Bispo de, Corrêa, Alex Pauvolid
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:Brasil
Institución:Instituto Evandro Chagas (IEC)
Repositorio:Repositório Digital do Instituto Evandro Chagas (Patuá)
Idioma:inglés
OAI Identifier:oai:patua.iec.gov.br:iec/4423
Acceso en línea:https://patua.iec.gov.br/handle/iec/4423
Access Level:acceso abierto
Palabra clave:Febre do Nilo Ocidental / veterinária
Febre do Nilo Ocidental / transmissão
Vírus do Nilo Ocidental / patogenicidade
Cavalos / anatomia & histologia
Cavalos / virologia
Exposição Ambiental / análise
Descripción
Sumario:Abstract: In June 2019, a horse with neurological disorder was diagnosed with West Nile virus (WNV) in Boa Viagem, a municipality in the state of Ceará, northeast Brazil. A multi-institutional task force coordinated by the Brazilian Ministry of Health was deployed to the area for case investigation. A total of 513 biological samples from 78 humans, 157 domestic animals and 278 free-ranging wild birds, as well as 853 adult mosquitoes of 22 species were tested for WNV by highly specific serological and/or molecular tests. No active circulation of WNV was detected in vertebrates or mosquitoes by molecular methods. Previous exposure to WNV was confirmed by seroconversion in domestic birds and by the detection of specific neutralizing antibodies in 44% (11/25) of equids, 20.9% (14/67) of domestic birds, 4.7% (13/278) of free-ranging wild birds, 2.6% (2/78) of humans, and 1.5% (1/65) of small ruminants. Results indicate that not only equines but also humans and different species of domestic animals and wild birds were locally exposed to WNV. The detection of neutralizing antibodies for WNV in free-ranging individuals of abundant passerine species suggests that birds commonly found in the region may have been involved as amplifying hosts in local transmission cycles of WNV.

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