title: Phylodynamics of DENV-1 reveals the spatiotemporal co-circulation of two distinct lineages in 2013 and multiple introductions of dengue virus in Goiás, Brazil.
abstract: Dengue virus type 1 (DENV-1) was the first serotype introduced in Brazil, during in the 1980s. Since then, this virus has spread in the Brazilian territory, causing several outbreaks. In 2013 the highest number of dengue cases was notified, when compared to the previous years in Brazil, and the state of Goiás reported over 160 thousand cases. In this study, we aimed to present the Phylodynamics of DENV-1 isolates from the state of Goiás, Brazil, during 2013 outbreak, based on the envelope gene (E) sequences. Phylogenetic analysis revealed that Brazilian DENV-1 isolates are grouped together with viruses from genotype V in two distinct lineages (lineage I and lineage II) reflecting co-circulation. Phylogeographic analyses showed that these lineages were introduced in different moments in Goiás, Brazil, using distinct routes, likely originated from the Caribbean. Lineage I was first introduced coming from Rio de Janeiro (2007-2012), followed by the introduction from Argentina (2010-2013). Lineage II was introduced in a single moment from Rio de Janeiro and this clade has existed since 2007-2010. The different viral introduction events demonstrate the viral dispersion process with neighboring regions, which is essential for the maintenance of outbreaks and introduction of new emerging viruses. In conclusion, obtained data reveals the importance of continuous molecular surveillance of this virus in different regions, providing a better understanding of DENV-1 circulation, considering the evolutionary and virus spread patterns.
authors.affiliation: Federal University of Goiás, Goiânia, Goiás, Brazil.
authors.forename: Marielton Dos Passos
authors.initials: Mdos P
authors.lastname: Cunha
authors.affiliation: Federal University of Goiás, Goiânia, Goiás, Brazil.
authors.forename: Vanessa Neiva
authors.initials: VN
authors.lastname: Guimarães
authors.affiliation: Federal University of Goiás, Goiânia, Goiás, Brazil.
authors.forename: Menira
authors.initials: M
authors.lastname: Souza
authors.affiliation: Federal University of Goiás, Goiânia, Goiás, Brazil.
authors.forename: Divina das Dôres
authors.initials: Dd
authors.lastname: de Paula Cardoso
authors.affiliation: Federal University of Goiás, Goiânia, Goiás, Brazil.
authors.forename: Tâmera Nunes Vieira
authors.initials: TN
authors.lastname: de Almeida
authors.affiliation: Federal University of Goiás, Goiânia, Goiás, Brazil.
authors.forename: Thaís Santana
authors.initials: TS
authors.lastname: de Oliveira
authors.affiliation: Federal University of Goiás, Goiânia, Goiás, Brazil. Electronic address: fabiolasf@gmail.com.
authors.forename: Fabíola Souza
authors.initials: FS
authors.lastname: Fiaccadori
mesh_terms: D001938:Brazil / Q000453:epidemiology; D003715:Dengue / Q000453:epidemiology* / Q000821:virology; D003716:Dengue Virus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D019143:Evolution, Molecular; D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D010802:Phylogeny; D058974:Phylogeography; D017423:Sequence Analysis, RNA / Q000379:methods*; D014759:Viral Envelope Proteins / Q000235:genetics*
chemical_list: D014759:Viral Envelope Proteins
keywords: Dengue virus type 1; Genotype V; Lineages; Phylodynamics; Phylogeny; Phylogeography