Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional

BIBTEX RIS

First Report of the East-Central South African Genotype of Chikungunya Virus in Rio de Janeiro, Brazil

2017; Public Library of Science; Linguagem: Inglês

10.1371/currents.outbreaks.4200119978d62ccaa454599cd2735727

2157-3999

Thiara Manuele Alves de Souza, Elzinandes Leal de Azeredo, Jéssica Badolato-Corrêa, Paulo Vieira Damasco, Carla Cunha Santos, Fabienne Petitinga-Paiva, Priscila Conrado Guerra Nunes, Luciana Santos Barbosa, Márcio Costa Cipitelli, Thaís Chouin-Carneiro, Nieli Rodrigues Costa Faria, Rita Maria Ribeiro Nogueira, Fernanda de Bruycker‐Nogueira, Flávia Barreto dos Santos,

Malaria Research and Control

Chikungunya virus (CHIKV) is an arbovirus that causes an acute febrile syndrome with a severe and debilitating arthralgia. In Brazil, the Asian and East-Central South African (ECSA) genotypes are circulating in the north and northeast of the country, respectively. In 2015, the first autochthonous cases in Rio de Janeiro, Brazil were reported but until now the circulating strains have not been characterized. Therefore, we aimed here to perform the molecular characterization and phylogenetic analysis of CHIKV strains circulating in the 2016 outbreak occurred in the municipality of Rio de Janeiro.The cases analyzed in this study were collected at a private Hospital, from April 2016 to May 2016, during the chikungunya outbreak in Rio de Janeiro, Brazil. All cases were submitted to the Real Time RT-PCR for CHIKV genome detection and to anti-CHIKV IgM ELISA. Chikungunya infection was laboratorially confirmed by at least one diagnostic method and, randomly selected positive cases (n=10), were partially sequenced (CHIKV E1 gene) and analyzed.The results showed that all the samples grouped in ECSA genotype branch and the molecular characterization of the fragment did not reveal the A226V mutation in the Rio de Janeiro strains analyzed, but a K211T amino acid substitution was observed for the first time in all samples and a V156A substitution in two of ten samples.Phylogenetic analysis and molecular characterization reveals the circulation of the ECSA genotype of CHIKV in the city of Rio de Janeiro, Brazil and two amino acids substitutions (K211T and V156A) exclusive to the CHIKV strains obtained during the 2016 epidemic, were reported.