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Volume 30, Number 8—August 2024
Online Report

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

Alice Fusaro1, Juan Pu1, Yong Zhou1, Lu Lu, Luca Tassoni, Yu Lan, Tommy Tsan-Yuk Lam, Zoe Song, Justin Bahl, Jiani Chen, George F. Gao, Isabella Monne, Jinhua LiuComments to Author , and The International H9 Evolution Consortium2
Author affiliations: Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy (A. Fusaro, L. Tassoni, I. Monne); China Agricultural University, Beijing, China (J. Pu, Y. Zhou, J. Liu); University of Edinburgh, Edinburgh, Scotland, UK (L. Lu); Chinese Center for Disease Control and Prevention, Beijing (Y. Lan); The University of Hong Kong, Hong Kong, China (T.T.-Y. Lam, Z. Song); University of Georgia, Athens, Georgia, USA (J. Bahl, J. Chen); Chinese Academy of Sciences, Beijing (G.F. Gao)

Main Article

Figure 1

Phylogenetic trees and assigned clades of as part of a proposed global classification and nomenclature system for A/H9 influenza viruses. A) Maximum-likelihood (ML) phylogenetic tree obtained using the complete dataset. The branches are colored according to the 3 identified lineages. A/quail/Hong Kong/A28945/1988 and A/Quail/Hong Kong/AF157/1992 were used as an outgroup black). B) ML phylogenetic tree of the Y lineage dataset. Six sequences of the G lineage were used as the outgroup. Numbers next to the clade-defining nodes represent ultra-fast bootstrap supports. Clades are labeled and marked in colors. C) ML phylogenetic tree of the G lineage. Six sequences of the Y lineage were selected as the outgroup. Numbers next to the clade-defining nodes represent ultra-fast bootstrap supports. Clades are labeled and marked in colors. D) ML phylogenetic tree of the B lineage. Six sequences of the Y lineage were used as the outgroup. Numbers next to the clade-defining nodes represent ultra-fast bootstrap supports. Clades are labeled and marked in colors. Scale bars indicate substitutions per site.

Figure 1. Phylogenetic trees and assigned clades of as part of a proposed global classification and nomenclature system for A/H9 influenza viruses. A) Maximum-likelihood (ML) phylogenetic tree obtained using the complete dataset. The branches are colored according to the 3 identified lineages. A/quail/Hong Kong/A28945/1988 and A/Quail/Hong Kong/AF157/1992 were used as an outgroup black). B) ML phylogenetic tree of the Y lineage dataset. Six sequences of the G lineage were used as the outgroup. Numbers next to the clade-defining nodes represent ultra-fast bootstrap supports. Clades are labeled and marked in colors. C) ML phylogenetic tree of the G lineage. Six sequences of the Y lineage were selected as the outgroup. Numbers next to the clade-defining nodes represent ultra-fast bootstrap supports. Clades are labeled and marked in colors. D) ML phylogenetic tree of the B lineage. Six sequences of the Y lineage were used as the outgroup. Numbers next to the clade-defining nodes represent ultra-fast bootstrap supports. Clades are labeled and marked in colors. Scale bars indicate substitutions per site.

Main Article

1These first authors contributed equally to this article.

2Members of The International H9 Evolution Consortium are listed at the end of this article.

Page created: July 12, 2024
Page updated: July 22, 2024
Page reviewed: July 22, 2024
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