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. 2019 Dec;25(12):2295–2298. doi: 10.3201/eid2512.181472

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This is a publication of the U.S. Government. This publication is in the public domain and is therefore without copyright. All text from this work may be reprinted freely. Use of these materials should be properly cited.

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Maximum-likelihood phylogenetic tree for the hemagglutinin genes of a highly pathogenic avian influenza A(H5N8) virus isolated from a seal in the Baltic Sea region of Poland (underlined) and reference sequences. Different clades and the subclades of 2.3.4.4 are marked. Accession numbers for reference sequences are provided; numbers beginning with EPI are from the GISAID EpiFLU database (https://www.gisaid.org), others from GenBank. Scale bar indicates nucleotide substitutions per site.