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Título: | Highly pathogenic avian influenza H5N1 virus infections in pinnipeds and seabirds in Uruguay: Implications for bird–mammal transmission in South America |
Autor: | Tomás Custodio, Gonzalo Martín Marandino, Ana Panzera Crespo, Yanina Rodríguez, Sirley Luz Wallau, Gabriel Zimmer Dezordi, Filipe Pérez Valiente, Ramiro Andrés Bassetti Baccino, Lucía Negro, Raúl Germán Williman, Joaquín Uriarte, Valeria Grazioli, Fabiana Leizagoyen, Carmen Riverón Mato, Ana Sabrina Coronel, Jaime Bello Simmari, Soledad Páez, Enrique A. Lima, Martin Méndez, Virginia Pérez, Ruben |
Tipo: | Artículo |
Palabras clave: | Avian influenza, Mammal adaptation, Sea mammals, Transmission |
Fecha de publicación: | 2024 |
Resumen: | The highly pathogenic avian influenza viruses of clade 2.3.4.4b have caused unprecedented deaths in South American wild birds, poultry, and marine mammals. In September 2023, pinnipeds and seabirds appeared dead on the Uruguayan Atlantic coast. Sixteen influenza virus strains were characterized by real-time reverse transcription PCR and genome sequencing in samples from sea lions (Otaria flavescens), fur seals (Arctocephalus australis), and terns (Sterna hirundinacea). Phylogenetic and ancestral reconstruction analysis
showed that these strains have pinnipeds most likely as the ancestral host, representing a recent introduction of clade 2.3.4.4b in Uruguay. The Uruguayan and closely related strains from Peru (sea lions) and Chile (sea lions and a human case) carry mammalian adaptative residues 591K and 701N in the viral polymerase basic protein 2 (PB2). Our findings suggest that clade 2.3.4.4b strains in South America may have spread from mammals to mammals and seabirds, revealing a new transmission route. |
Editorial: | Oxford |
EN: | Virus Evolution, 2024, 10(1): veae031. |
Citación: | Tomás Custodio, G, Marandino, A, Panzera Crespo, Y [y otros autores]. "Highly pathogenic avian influenza H5N1 virus infections in pinnipeds and seabirds in Uruguay: Implications for bird–mammal transmission in South America". Virus Evolution. [en línea] 2024, 10(1): veae031. 8 h. DOI: 10.1093/ve/veae031 |
ISSN: | 2057-1577 |
Cobertura geográfica: | South America |
Licencia: | Licencia Creative Commons Atribución (CC - By 4.0) |
Aparece en las colecciones: | Publicaciones académicas y científicas - Facultad de Ciencias |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | ||
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10.1093-ve-veae031.pdf | 2,42 MB | Adobe PDF | Visualizar/Abrir |
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