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Volume 30, Number 9—September 2024
Research

Molecular Epidemiology of Western Equine Encephalitis Virus, South America, 2023–2024

Aline Scarpellini Campos, Ana Claúdia Franco, Fernanda M. Godinho, Rosana Huff, Darlan S. Candido, Jader da Cruz Cardoso, Xinyi Hua, Ingra M. Claro, Paola Morais, Carolina Franceschina, Thales de Lima Bermann, Franciellen Machado dos Santos, Milena Bauermann, Tainá Machado Selayaran, Amanda Pellenz Ruivo, Cristiane Santin, Juciane Bonella, Carla Rodenbusch, José Carlos Ferreira, Scott C. Weaver, Vilar Ricardo Gewehr, Gabriel Luz Wallau, William M. de Souza1Comments to Author , and Richard Steiner Salvato1Comments to Author 
Author affiliations: Secretaria de Saúde do Estado do Rio Grande do Sul, Porto Alegre, Brazil (A.S. Campos, F.M. Godinho, R. Huff, J. da Cruz Cardoso, P. Morais, C. Franceschina, F. Machado dos Santos, M. Bauermann, T.M. Selayaran, A.P. Ruivo, R.S. Salvato); Universidade Federal do Rio Grande do Sul, Porto Alegre (A.C. Franco, T. de L. Bermann, R.S. Salvato); Imperial College London, London, UK (D.S. Candido); University of Kentucky, Lexington, Kentucky, USA (X. Hua, I.M. Claro, W.M. de Souza); Secretaria de Agricultura do Estado do Rio Grande do Sul, Porto Alegre (C. Santin, J. Bonella, C. Rodenbusch, J.C. Ferreira, V.R. Gewehr); University of Texas Medical Branch, Galveston, Texas, USA (S.C. Weaver); Fundação Oswaldo Cruz, Recife, Brazil (G.L. Wallau); Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany (G.L. Wallau)

Main Article

Figure 2

Maximum-likelihood phylogenetic tree of 3 new WEEV strains from Rio Grande do Sul state, Brazil (bold text), and reference sequences. Tip colors indicate WEEV lineage. We used an uncorrelated log-normal relaxed molecular clock model with an exponential rate distribution for generating the time-rooted tree. Posterior probability scores appear next to key well-supported nodes. Dates at key nodes are the estimated dates of divergence from a common ancestor, with Bayesian credible intervals. WEEV, western equine encephalitis virus.

Figure 2. Maximum-likelihood phylogenetic tree of 3 new WEEV strains from Rio Grande do Sul state, Brazil (bold text), and reference sequences. Tip colors indicate WEEV lineage. We used an uncorrelated log-normal relaxed molecular clock model with an exponential rate distribution for generating the time-rooted tree. Posterior probability scores appear next to key well-supported nodes. Dates at key nodes are the estimated dates of divergence from a common ancestor, with Bayesian credible intervals. WEEV, western equine encephalitis virus.

Main Article

1These senior authors contributed equally to this article.

Page created: July 25, 2024
Page updated: August 22, 2024
Page reviewed: August 22, 2024
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