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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

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