Evidence map›Paper›PMID 41011828›Full record

ReviewPathogens (Basel, Switzerland)2025

H5N1 Clade 2.3.4.4b: Evolution, Global Spread, and Host Range Expansion.

Klaudia Chrzastek, Carolin M Lieber, Richard K Plemper

Abstract readReview
In one paragraph

Review in Pathogens (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Klaudia ChrzastekDepartment of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA.ORCID 0000-0003-1264-6987
Carolin M LieberCenter for Translational Antiviral Research, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA.ORCID 0000-0002-6845-2746
Richard K PlemperCenter for Translational Antiviral Research, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA.

Funding

Development of a Broad-Spectrum Inhibitor against Seasonal and Highly-Pathogenic Influenza VirusesR01AI141222 · NIAID · GEORGIA STATE UNIVERSITY · PI PLEMPER, RICHARD K. · 2019 to 2023
$5.0M
Developing Inhibitors of Seasonal and Pandemic Influenza VirusesR01AI193216 · NIAID · GEORGIA STATE UNIVERSITY · PI PAINTER, GEORGE ROBERT, PLEMPER, RICHARD K. · 2025 to 2025
$3.4M
NIAID NIH HHS R01 AI141222NIAID NIH HHS R01 AI193216
6 · The paper itself

Abstract

Highly pathogenic avian influenza viruses (HPAIVs) of the H5 subtype pose a continuous threat to animal and public health due to their zoonotic potential, rapid evolution, and ability to spread across continents. Since the emergence of the A/goose/Guangdong/1/96 (GsGD) H5 lineage in 1996, several clades have caused devastating outbreaks in poultry and wild bird populations, occasionally resulting in human infections. Of the many clades that have evolved, only three-clades 2.2, 2.3.2.1, and most recently 2.3.4.4b-have demonstrated the ability to spread globally. The 2.3.4.4b clade has raised significant concern due to its continuous geographic expansion, establishment in new ecosystems, including Antarctica, and increasing reports of mammalian infections, including companion animals, marine mammals, and livestock. Recently, cow-to-cow and cow-to-human transmission marked a paradigm shift in the epidemiology of avian influenza and emphasized the need for continued surveillance. This review summarizes the historical emergence, global spread, and molecular evolution of H5 HPAIVs with a specific focus on the recent expansion of clade 2.3.4.4b and its capacity for mammalian spillover.

Indexed as

Evolution, MolecularHost SpecificityInfluenza A Virus, H5N1 SubtypeInfluenza, HumanInfluenza in BirdsAnimalsBirdsDisease OutbreaksHumansZoonosesAIVclade 2.3.4.4bepidemiologyH5N1HPAIVmammalian infection

Identifiers

PMID41011828
PMCPMC12472894

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.