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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 Scotch
, Temitope O.C. Faleye, Angelica Urquidez-Negrete, Arvind Varsani, Ann Fan, and Anne Justice-Allen
, Temitope O.C. Faleye, Angelica Urquidez-Negrete, Arvind Varsani, Ann Fan, and Anne Justice-Allen
Figure 1
Figure 1. Maximum clade credibility tree of highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b genotype D1.1 virus across flyway regions, North America, fall 2024. Branch colors represent the flyways with the highest posterior probability. The tree represents genotype among avian hosts from 300 taxa (excluding Galliformes) collected during October 2024–March 2025.
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