ArticleScientific reports2017
First genome report and analysis of chicken H7N9 influenza viruses with poly-basic amino acids insertion in the hemagglutinin cleavage site.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 19 citations in OpenAlex.
- Comparative Immunogenicity of Inactivated H7N9 Avian Influenza Vaccines with Different Internal Gene Backbones.Microorganisms · 2026Article
- Evolutionary lineage and host origin influence virulence and mammalian adaptation of H7N9 avian influenza viruses.Poultry science · 2026Article
- Cross-Species Transmission Risks of a Quail-Origin H7N9 Influenza Virus from China Between Avian and Mammalian Hosts.Viruses · 2025Article
- Recent global outbreaks of highly pathogenic and low-pathogenicity avian influenza A virus infections.Virulence · 2024Article
- Coinfection of Chickens with H9N2 and H7N9 Avian Influenza Viruses Leads to Emergence of Reassortant H9N9 Virus with Increased Fitness for Poultry and a Zoonotic Potential.Journal of virology · 2022Article
- Article
- Insertions of codons encoding basic amino acids in H7 hemagglutinins of influenza A viruses occur by recombination with RNA at hotspots near snoRNA binding sites.RNA (New York, N.Y.) · 2021Article
- H7N9 influenza split vaccine with SWE oil-in-water adjuvant greatly enhances cross-reactive humoral immunity and protection against severe pneumonia in ferrets.NPJ vaccines · 2020Article
- Variable impact of the hemagglutinin polybasic cleavage site on virulence and pathogenesis of avian influenza H7N7 virus in chickens, turkeys and ducks.Scientific reports · 2019Article
- Article
- Characterising routes of H5N1 and H7N9 spread in China using Bayesian phylogeographical analysis.Emerging microbes & infections · 2018Article
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Authors and funding
10 authors at 4 institutions in 2 countries.
Funding
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Abstract
We report the full-length sequence of two chicken source influenza A (H7N9) viruses found in Guangdong live poultry market (LPM) during the most recent wave of human infections (from October 2016 to the present time). These viruses carry insertion of poly-basic amino acids (KGKRTAR/G) at the protease cleavage site of the HA protein, which were previously found in the highly pathogenic (HP) human influenza A (H7N9) [IAV(H7N9)] strains. Phylogenetic analysis of these two novel avian influenza viruses (AIVs) suggested that their genomes reassorted between the Yangtze River Delta (YRD) and Pearl River Delta (PRD) clades. Molecular clock analysis indicated that they emerged several months before the HP human strains. Collectively, our results suggest that IAV(H7N9) viruses evolve in chickens through antigenic drift to include a signature HP sequence in the HA gene, which highlights challenges in risk assessment and public health management of IAV(H7N9) infections at the human-animal interface.
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