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Peer-reviewed veterinary case report

Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b Virus and Mass Mortality in Eurasian Cranes, Germany, 2025.

Journal:
Emerging infectious diseases
Year:
2026
Authors:
Günther, Anne et al.
Species:
bird

Abstract

In autumn 2025, highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b virus, genotype EA-2024-DI.2.1, caused systemic infections leading to a mass mortality event among the western migrating subpopulation of Eurasian cranes (Grus grus) in Germany. Gregarious behavior at feeding and resting sites likely promoted rapid viral spread within the population.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/42116621/