Proposal for a Global Classification and Nomenclature System for A/H9 Influenza Viruses

The International H9 Evolution Consortium, Alice Fusaro, Lu Lu, Luca Tassoni, Yu Lan, Juan Pu, Tommy Tsan-Yuk Lam Lam, Justin Bahl, Zoe Song, Jiani Chen, George F. Gao, Isabella Monne, Jinhua Liu*, Yong Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Influenza A/H9 viruses circulate worldwide in wild and domestic avian species, continuing to evolve and posing a zoonotic risk. A substantial increase in human infections with A/H9N2 subtype avian influenza viruses (AIVs) and the emergence of novel reassortants carrying A/H9N2-origin internal genes has occurred in recent years. Different names have been used to describe the circulating and emerging A/H9 lineages. To address this issue, an international group of experts from animal and public health laboratories, endorsed by the WOAH/FAO Network of Expertise on Animal Influenza, has created a practical lineage classification and nomenclature system based on the analysis of 10,638 hemagglutinin sequences from A/H9 AIVs sampled worldwide. This system incorporates phylogenetic relationships and epidemiologic characteristics designed to trace emerging and circulating lineages and clades. To aid in lineage and clade assignment, an online tool has been created. This proposed classification enables rapid comprehension of the global spread and evolution of A/H9 AIVs.
Original languageEnglish
Pages (from-to)1-13
Number of pages13
JournalEmerging Infectious Diseases
Volume30
Issue number8
Early online date16 Jul 2024
DOIs
Publication statusPublished - 8 Aug 2024

Keywords / Materials (for Non-textual outputs)

  • A/H9 influenza viruses
  • Lan Y
  • Lu L
  • Pu J
  • Suggested citation for this article: Fusaro A
  • Tassoni L
  • Zhou Y
  • classification
  • et al. Proposal for a global classification and nomenclature system for A/H9 influenza viruses. Emerg Infect Dis. 2024 August [date cited]. https://doi.org/10.3201/eid3008.231176
  • global
  • hemagglutinin
  • influenza
  • nomenclature
  • phylogeny
  • respiratory infections
  • viruses

Fingerprint

Dive into the research topics of 'Proposal for a Global Classification and Nomenclature System for A/H9 Influenza Viruses'. Together they form a unique fingerprint.

Cite this