Fig. 3.
Maximum likelihood phylogenetic tree constructed using Geneious prime (version 2020.2.4) (https://www.geneious.com/prime/) with 63 locally collected samples from Kumamoto city. The samples represent the same locality within the same time frame. The scale bar indicates the number of substitutions per site. The Wuhan-hu-1 (NC_045512; highlighted in blue) is placed as the root sequence of the tree, and the red-highlighted samples contain the G→A mutation at 29234 loci of the SARS-CoV-2 genome. AY is the alias used for B.1.617.2 lineage (Delta variant).