ArticleNpj viruses2024
Dominant HPAIV H5N1 genotypes of Germany 2021/2022 are linked to high virulence in Pekin ducklings.
Article in Npj viruses, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed.
- Counting cases, conserving species: addressing highly pathogenic avian influenza in wildlife.Biological reviews of the Cambridge Philosophical Society · 2026Review
- Global dynamics of avian influenza: a twenty-year analysis of highly pathogenic viruses linking the Caspian Basin, Eurasia and Africa sectors (2005-2025).Frontiers in cellular and infection microbiology · 2026Review
- Article
Corrections and comments
- Erratum issued
Authors and funding
7 authors.
Funding
Abstract
Highly pathogenic avian influenza viruses (HPAIV) of H5 clade 2.3.4.4b pose an ongoing threat worldwide. It remains unclear whether this panzootic situation would favor low virulent phenotypes expected by the 'avirulence hypothesis' of viral evolution. Assessing virulence in Pekin ducklings in an intramuscular infection model revealed that the two genotypes that dominated the epidemiological situation in Germany during the period 2021 and 2022 (EU-RL:CH and EU-RL:AB) were of high virulence. In contrast, rare genotypes were of intermediate virulence. The genetic constellation of these reassortants pointed to an important role of the viral polymerase complex (RdRP), particularly the PB1 genome segment, in shaping virulence in ducklings. Occulo-nasal infection of ducklings confirmed the phenotypes for two representative viruses and indicated a more efficient replication for the high virulence strain. These observations would be in line with the 'virulence-transmission trade-off' model for describing HPAIV epidemiology in wild birds in Germany.
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