Fig. 2: Phylogenetic relationships of Scottish genomes to all SARS-CoV-2 genomes.
From: Genomic epidemiology reveals multiple introductions of SARS-CoV-2 from mainland Europe into Scotland

Known travel histories are indicated (see legend). Global sequence data were available from GISAID. Non-Scottish sequences were subsampled for presentation purposes by keeping a single sequence per date, country or lineage, reducing the total number of non-Scottish sequences from 17,578 to 5,389. The scale bar indicates the number of substitutions per nucleotide site.