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Volume 32, Number 8—August 2026

Research

Epidemiologic, Entomologic, and Virologic Findings during Reemergence of Western Equine Encephalitis Virus, Argentina

Lorena Spinsanti1, Cintia Fabbri1, Ana Piskorz, Victoria Luppo, Gonzalo Castro, Adrián Farías, Mauricio Beranek, Gabriel Barco, Mariel Feroci, Cintia Barulli, Jorge García, Anabel Sinchi, Anabella Fantilli, María Belén Pisano, Agostina Pierdomenico, Andrea Marcos, Rodrigo Balzano, Facundo Cuba, Sol Haim, Florencia Mallou, Carolina Paladino, Tomás Poklepovich, Liliana Luque, Brenda Konigheim, Juan Javier Aguilar, Jimena Renga, Maria Alejandra Morales2, and Adrián Díaz2
Author affiliation: National University of Córdoba, Córdoba, Argentina (L. Spinsanti, G. Castro, A. Farías, M. Beranek, G. Barco, A. Fantilli, M.B. Pisano, B. Konigheim, J.J. Aguilar, A. Díaz); National Administration of Laboratories and Health Institutes, Buenos Aires, Argentina (C. Fabbri, V. Luppo, M. Feroci, C. Barulli, J. García, A. Sinchi, F. Cuba, S. Haim, F. Mallou, C. Paladino, T. Poklepovich, M.A. Morales); National Service of Agrifood Health and Quality (SENASA), Buenos Aires (A. Piskorz, A. Pierdomenico, A. Marcos, R. Balzano, J. Renga); Ministry of Health of Córdoba Province, Córdoba (G. Castro, L. Luque); National Scientific and Technical Research Council (CONICET), Buenos Aires (G. Barco, M.B. Pisano, B. Konigheim, A. Diaz)

Main Article

Figure 4

Maximum-likelihood phylogenetic tree based on complete genomes from study of epidemiologic, entomologic, and virologic findings during reemergence of western equine encephalitis virus, Argentina, 2023–2024. The tree includes 3 newly sequenced strains from Corrientes (n = 2) and Río Negro (n = 1) Provinces in Argentina, indicated in boldface, alongside reference sequences. Tip colors indicate lineages based on Bergren et al. (24). Numbers at major nodes indicate bootstrap support values (10,000 replicates). GenBank accession numbers are provided for reference sequences; accession numbers for all sequences are provided in Tables 1 and 2 and the Appendix . Scale bar indicates nucleotide substitutions per site.

Figure 4. Maximum-likelihood phylogenetic tree based on complete genomes from study of epidemiologic, entomologic, and virologic findings during reemergence of western equine encephalitis virus, Argentina, 2023–2024. The tree includes 3 newly sequenced strains from Corrientes (n = 2) and Río Negro (n = 1) Provinces in Argentina, indicated in boldface, alongside reference sequences. Tip colors indicate lineages based on Bergren et al. (24). Numbers at major nodes indicate bootstrap support values (10,000 replicates). GenBank accession numbers are provided for reference sequences; accession numbers for all sequences are provided in Tables 1 and 2 and the Appendix . Scale bar indicates nucleotide substitutions per site.

Main Article

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Main Article

1These authors contributed equally to this article.

2These senior authors contributed equally to this article.

Page created: June 25, 2026
Page updated: July 16, 2026
Page reviewed: July 16, 2026
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