Volume 32, Number 10—October 2026
Research
Molecular Epidemiology and Evolution of Swine Influenza A Viruses, Vietnam, 2020–2024
Figure 2

Figure 2. Maximum-likelihood tree of influenza A virus H1 gene from study of molecular epidemiology and evolution of swine influenza A viruses, Vietnam, 2020–2024. Branches are colored by clades. Scale bar represents the number of nucleotide substitutions per site.
1These first authors contributed equally to this article.
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