Article
Author: de Lima Campos, Túlio ; Camelo, Fernanda Sindeaux ; Paiva, Anne ; da Silva Queiroz, Jackson Alves ; de Figueiredo, Regina Maria Pinto ; Vieira, Deusilene ; Silva, Dejanane ; Araújo, Guilherme ; Almeida, Tatiana Amaral Pires de ; Souza, Victor ; André Júnior, Walter ; Silva, Samyly Coutinho de Aguiar ; Wallau, Gabriel Luz ; Lopes, Janis ; Maito, Rodrigo ; de Oliveira, Yasmin Silva ; Delatorre, Edson ; Passos-Silva, Ana Maísa ; Nascimento, Valdinete ; Rossi, Agata ; Bello, Gonzalo ; Bento, Ana I. ; Morais, Márcia Andréa ; Campos, Túlio de Lima ; de Aguiar Silva, Samyly Coutinho ; Filippis, Ana Maria Bispo de ; Arantes, Ighor ; Marques, Nelson Fernando Quallio ; Rodrigues, Taynã ; Carvalho, Renata Lia Coragem de ; Fernandes, Leíse Gomes ; Naveca, Felipe Gomes ; Alexander, Laura W. ; Rodrigues, Rosiane ; Rocha, Luisa ; Chiang, Jannifer Oliveira ; Alexander, Laura W ; Fé, Luciana ; Amorim, Tatyana ; Mariscal, Francy ; Arcanjo, Ana Ruth ; Meneses, Cátia ; Albuquerque, Stella ; Figueiredo, Regina Maria Pinto de ; Gräf, Tiago ; de Almeida, Tatiana Amaral Pires ; Xavier, Natana ; Santos, João Hugo ; Oliveira, Marco Aurélio Almeida de ; Queiroz, Jackson Alves da Silva ; de Filippis, Ana Maria Bispo ; Ribeiro, Karina ; Nascimento, Fernanda ; Melo, Alexsandro Xavier de ; Mejía, Matilde ; Frutuoso, Livia Vinhal ; Moreira, Emerson ; Cruz, Ana Cecília Ribeiro ; de Carvalho, Renata Lia Coragem ; Linhares, Aline ; de Oliveira, Marco Aurélio Almeida ; Bento, Ana I ; Presibella, Mayra Marinho ; Mattos, Cristiane ; Oliveira, Yasmin Silva de ; Abdalla, Lígia ; de Melo, Alexsandro Xavier ; Casseb, Livia Neves ; Lins Neto, Roberto Dias ; Freitas, Lucas ; Silva, Ciciléia ; Sun, Yining
The Brazilian western Amazon is experiencing its largest laboratory-confirmed Oropouche virus (OROV) outbreak, with more than 6,300 reported cases between 2022 and 2024. In this study, we sequenced and analyzed 382 OROV genomes from human samples collected in Amazonas, Acre, Rondônia and Roraima states, between August 2022 and February 2024, to uncover the origin and genetic evolution of OROV in the current outbreak. Genomic analyses revealed that the upsurge of OROV cases in the Brazilian Amazon coincides with spread of a novel reassortant lineage containing the M segment of viruses detected in the eastern Amazon region (2009-2018) and the L and S segments of viruses detected in Peru, Colombia and Ecuador (2008-2021). The novel reassortant likely emerged in the Amazonas state between 2010 and 2014 and spread through long-range dispersion events during the second half of the 2010s. Phylodynamics reconstructions showed that the current OROV spread was driven mainly by short-range (< 2 km) movements consistent with the flight range of vectors. Nevertheless, a substantial proportion (22%) of long-range (>10 km) OROV migrations were also detected, consistent with viral dispersion by humans. Our data provide a view of the unprecedented spread and evolution of OROV in the Brazilian western Amazon region.