Pacific and Atlantic sea lion mortality caused by highly pathogenic Avian Influenza A(H5N1) in South America

We describe the evolution of the outbreak of Highly Pathogenic Avian Influenza (HPAI) A(H5N1) in sea lions (Otaria flavescens) of South America. At least 24,000 sea lions died in Peru, Chile, Argentina, Uruguay, and Brazil between January–October 2023. The most plausible route of infection is cohabi...

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Bibliographic Details
Published in:Travel Medicine and Infectious Disease
Main Authors: Pablo I. Plaza, Víctor Gamarra-Toledo, Juan Rodríguez Euguí, Natalia Rosciano, Sergio A. Lambertucci
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 2024
Subjects:
H5N1
Influenza
Mortality
Marine mammals
South America
Arctic medicine. Tropical medicine
RC955-962
Infectious and parasitic diseases
RC109-216
Arctic
Argentina
Pacific
Uruguay
Online Access:https://doi.org/10.1016/j.tmaid.2024.102712
https://doaj.org/article/074b944beb07497ba5f652a5de7b07af
Description
Summary:We describe the evolution of the outbreak of Highly Pathogenic Avian Influenza (HPAI) A(H5N1) in sea lions (Otaria flavescens) of South America. At least 24,000 sea lions died in Peru, Chile, Argentina, Uruguay, and Brazil between January–October 2023. The most plausible route of infection is cohabiting with or foraging on infected birds. However, we urge a detailed evaluation of the sea lions actual source of infection given that the concomitant massive wild bird mortalities registered in the Pacific Ocean did not occur in the Atlantic Ocean.

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