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Nucleotide divergence between cluster V and clusters I–IV in the 2022 Mexican H7N3 HPAIVs. The diversity for eight segments decreases along with the increased number of clusters. The highest diversity is between cluster V and cluster I, whereas the lowest diversity is between cluster V and cluster IV. The calculation is based on the coding region for PB2, PB1, PA, HA, NP, and NA, while 982 nucleotides in the M segment and 838 nucleotides in the NS segment were used.
