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Radial tree of SARS-CoV-2 evolution, with branch length approximating divergence, showing that Omicron (light blue shadow) currently includes more than 45% or variations across 3193 genomes sampled between December 2019 and December 2022. Accessed online at https://nextstrain.org/ncov/gisaid/global/all-time?l=radial&m=div (accessed on 26 December 2022).
