ReviewCold Spring Harbor perspectives in medicine2020
H9 Influenza Viruses: An Emerging Challenge.
Review in Cold Spring Harbor perspectives in medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
79 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Transmission Pathways of Zoonotic Influenza Viruses and Influencing Factors: A Systematic Review of Recent Findings.Viruses · 2025Pooled it
- Article
- Pathogen identification and analysis of broiler bronchial obstruction syndrome using high-throughput sequencing technology.Poultry science · 2026Article
- Article
- Genetic and Epidemiological Evidence of Avian Influenza A(H9N2) Detection Among Poultry in Ghana, 2022.Viruses · 2026Article
- Epidemiological and Virological Characteristics of H9N2 Avian Influenza Virus in Jiangsu Province, China, 2024.Viruses · 2026Article
- Egyptian rousette bat humoral immunity to H9 influenza hemagglutinin.bioRxiv : the preprint server for biology · 2026Article
- Identification of thermostability-enhancing mutations in H9N2 avian influenza virus hemagglutinin.Journal of virology · 2026Article
- Genetic evolution and pathogenicity analysis of two natural recombinant isolates of avian influenza.Poultry science · 2026Article
- Evaluating how infectious bursal disease virus (IBDV) infection influences influenza H3N8 challenge in chickens.The Journal of general virology · 2026Article
- Article
- A cross-sectional study of avian influenza virus in poultry markets of Guangdong China, 2025.Frontiers in cellular and infection microbiology · 2026Article
- Evolution, spread and impact of highly pathogenic H5 avian influenza A viruses.Nature reviews. Microbiology · 2026Review
- Epidemiology, evolution, and biological characteristics of H3 avian influenza viruses isolated from chickens in China.One health (Amsterdam, Netherlands) · 2025Article
- Characterization of the first detected Avian Influenza A(H9N2) human case in Ghana.Emerging microbes & infections · 2025Article
- Sequential aerosol and oral immunization with a bivalent H9N2/H5N2 vaccine protects against H5N1 and H9N2 avian influenza challenges.NPJ vaccines · 2025Article
- Recent advances in lateral flow devices and point-of-care diagnostics for highly pathogenic avian influenza A viruses.Journal of virology · 2025Review
- Genetic Evolution of H9N2 Avian Influenza Virus in Guangxi, China.Microorganisms · 2025Article
- Phylogenetic and Molecular Characteristics of An H3N8 Avian Influenza Virus Detected in Wild Birds - Beijing, China, September 2024.China CDC weekly · 2025Article
- An emerging PB2-627 polymorphism increases the zoonotic risk of avian influenza virus by overcoming ANP32 host restriction in mammalian and avian hosts.Journal of virology · 2025Article
19 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
Abstract
Influenza A viruses (IAVs) of the H9 subtype are enzootic in Asia, the Middle East, and parts of North and Central Africa, where they cause significant economic losses to the poultry industry. Of note, some strains of H9N2 viruses have been linked to zoonotic episodes of mild respiratory diseases. Because of the threat posed by H9N2 viruses to poultry and human health, these viruses are considered of pandemic concern by the World Health Organization (WHO). H9N2 IAVs continue to diversify into multiple antigenically and phylogenetically distinct lineages that can further promote the emergence of strains with pandemic potential. Somewhat neglected compared with the H5 and H7 subtypes, there are numerous indicators that H9N2 viruses could be involved directly or indirectly in the emergence of the next influenza pandemic. The goal of this work is to discuss the state of knowledge on H9N2 IAVs and to provide an update on the contemporary global situation.
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Registered trials
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.