Circulation of Chikungunya virus East-Central-South Africa genotype during an outbreak in 2016-17 in Piaui State, Northeast Brazil

• Autor(a) principal: Cardoso, Felipe Daniel
• Data de Publicação: 2019
• Outros Autores: Rezende, Izabela Mauricio de, Barros, Emanuela Lima Teixeira, Sacchetto, Lívia, Garcês, Tereza Cristina de Carvalho Souza, Silva, Natalia Ingrid Oliveira, Alves, Pedro Augusto, Soares, Jefferson Oliveira, Kroon, Erna Geessien, Pereira, Anna Carolina Toledo da Cunha, Drumond, Betânia Paiva, Ferreira, Gustavo Portela
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista do Instituto de Medicina Tropical de São Paulo
• DOI: 10.1590/S1678-9946201961057
• Texto Completo: https://www.revistas.usp.br/rimtsp/article/view/163058
• topic: Chikungunya virus; Brazil; ECSA genotype; Arbovirus; Togavirus; Alphavirus; Molecular surveillance; Epidemiology; E1 gene

Chikungunya virus (CHIKV) is an arbovirus that emerged in the Americas in 2013. Infection with CHIKV is symptomatic in most of the cases and patients can develop chronic arthralgia that lasts from months to years in over 40% of the cases. The East-Central-South Africa (ECSA) genotype was introduced in Brazil in 2014, in Bahia State. Here we report the circulation of the CHIKV ECSA genotype in Piaui State, Northeast Brazil, during the years 2016-2017. The phylogenetic analysis revealed a single introduction of this lineage probably in 2015 and its maintenance at least until 2017. This analysis has also demonstrated the proximity of this genotype with isolates from neighboring States, and its partial nucleotide sequence of the viral E1 gene revealed a synapomorphy synonyms. This finding highlights the spread of the ECSA genotype in Brazil and supports its circulation in the Brazilian Northeast.