Volume 29, Number 4—April 2023
Research Letter
Highly Pathogenic Avian Influenza A(H5N1) Virus in a Harbor Porpoise, Sweden
Figure 2

Figure 2. Maximum-likelihood phylogenetic tree for the hamagglutinin gene of highly pathogenic avian influenza A(H5N1) virus isolates from a harbor porpoise (red dot) and wild and domestic birds (black triangles) from Sweden and reference viruses. The number at each node represents the sequence accession number. Bootstrap values (2,000 replicates) >70% are displayed at the branch nodes. Scale bar indicates number of nucleotide substitutions per site.
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