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Disclaimer: Early release articles are not considered as final versions. Any changes will be reflected in the online version in the month the article is officially released.

Volume 32, Number 8—August 2026

Research

Rapid Expansion of Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b Genotype D1.1 Virus across Flyway Regions, North America, Fall 2024

Matthew ScotchComments to Author , Temitope O.C. Faleye, Angelica Urquidez-Negrete, Arvind Varsani, Ann Fan, and Anne Justice-Allen
Author affiliation: Arizona State University, Tempe, Arizona, USA (M. Scotch, T.O.C. Faleye, A. Urquidez-Negrete, A. Varsani); Arizona Game & Fish Department, Phoenix, Arizona, USA (A. Fan, A. Justice-Allen)

Main Article

Figure 2

Chord diagram of highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b genotype D1.1 virus across flyway regions, North America, fall 2024. The diagram shows the magnitude of transitions between flyway regions on the basis of the recorded Markov jumps from the posterior distribution of phylodynamic trees. The diagram represents sequences from 300 taxa collected during October 2024–March 2025.

Figure 2. Chord diagram of highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b genotype D1.1 virus across flyway regions, North America, fall 2024. The diagram shows the magnitude of transitions between flyway regions on the basis of the recorded Markov jumps from the posterior distribution of phylodynamic trees. The diagram represents sequences from 300 taxa collected during October 2024–March 2025.

Main Article

Page created: June 13, 2026
Page updated: July 13, 2026
Page reviewed: July 13, 2026
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