ArticlemBio2025
Clade 2.3.4.4b H5N1 neuraminidase has a long stalk, which is in contrast to most highly pathogenic H5N1 viruses circulating between 2002 and 2020.
Article in mBio, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Characterization of oseltamivir-resistant A(H5N1) clade 2.3.4.4b, genotype D1.1 variants identified in poultry farms of British Columbia, Canada.Emerging microbes & infections · 2026Article
- Neuraminidase-inhibiting antibodies boosted by H1N1pdm infection cross-react differently with H5N1 of clades 2.3.4.4b and 2.3.2.1a.Emerging microbes & infections · 2026Article
- In silico analysis of pH stabilising mutations of hemagglutinin of influenza A virus H5N1 clade 2.3.4.4b.Npj viruses · 2026Review
- An overview of HPAI H5N1 clade 2.3.4.4b and its emerging threat in mainland Australia: Identified knowledge gaps.One health (Amsterdam, Netherlands) · 2026Review
- Population immunity to clade 2.3.4.4b H5N1 is dominated by anti-neuraminidase antibodies.mBio · 2026Article
- Mammary and respiratory infection of sheep with H5Nx clade 2.3.4.4b viruses with milk-mediated transmission to lambs.Science advances · 2026Article
- A TRAC-478-adjuvanted recombinant N1 neuraminidase influenza virus vaccine induces balanced and broadly protective immune responses.NPJ vaccines · 2026Article
- On the brink of emergence: an evolutionary approach to Influenza A virus H5N1 isolated from humans.Virus research · 2026Article
- The Road to Readiness: Commentary on the Journey of a Zoonotic H5 Influenza Vaccine Strain Update.Vaccines · 2026Review
- An H5N1 clade 2.3.4.4b virus vaccine that elicits cross-protective antibodies against conserved domains of H5 and N1 glycoproteins.Nature communications · 2026Article
- Clade 2.3.4.4b highly pathogenic H5N1 influenza viruses from birds in China replicate effectively in bovine cells and pose potential public health risk.Emerging microbes & infections · 2025Article
- Recent advances in lateral flow devices and point-of-care diagnostics for highly pathogenic avian influenza A viruses.Journal of virology · 2025Review
- Highly Pathogenic Avian Influenza (H5N1) Clade 2.3.4.4b in Cattle: A Rising One Health Concern.Animals : an open access journal from MDPI · 2025Review
- H5N1 2.3.4.4b: a review of mammalian adaptations and risk of pandemic emergence.The Journal of general virology · 2025Review
- Highly pathogenic avian influenza H5N1: history, current situation, and outlook.Journal of virology · 2025Review
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2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Since 2020, H5N1 highly pathogenic avian influenza (HPAI) viruses of clade 2.3.4.4b have been rapidly spreading in wild birds but have also caused a large number of mammalian infections and more than 70 known human cases. Importantly, this H5N1 clade has also crossed the species barrier into dairy cattle in the US in late 2023/early 2024. The neuraminidase (NA) protein of the N1 subtype can feature truncations in its stalk domain, which have been identified as putative virulence factors in poultry but seem to have a negative impact on transmission in mammals. Since its emergence, the vast majority of HPAI H5N1 A/goose/Guangdong/1/1996-lineage isolates have featured this truncated version of the NA stalk domain. Here, we report that this changed with the 2020 expansion of clade 2.3.4.4b H5N1 and that the majority of isolates-including the strains circulating in dairy cattle-feature a long NA stalk domain.IMPORTANCEWhile the truncated version of the N1 neuraminidase stalk domain may be associated with increased virulence in poultry, the long version of the stalk domain has been associated with increased transmissibility in mammals. The vast majority of highly pathogenic H5N1 of clade 2.3.4.4b that is currently circulating globally features the long stalk version of the neuraminidase, which may increase the risk for these viruses to become human-to-human transmissible.
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