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Fig. 1 | BMC Genomics

Fig. 1

From: Genomic epidemiology of the Los Angeles COVID-19 outbreak and the early history of the B.1.43 strain in the USA

Fig. 1

Multiple introductions of SARS-CoV-2 into LA county. A Phylogenetic tree of 286 LA county SARS-CoV-2 genomes together with 3,809 genomes sampled from across the world. Branches are colored according to the region of origin. Tip triangles (black) indicate the position of LA county sequences. The tree is rooted with strain Wuhan/Hu-1/2019. B The same tree as in A with different annotations. We zoomed in and highlighted four regions (blue, orange, purple, and green) of the tree where a single introduction was related to a cluster containing LA County genomes indicating community transmission. Nodes shown with a red star indicate a LA County introduction related to a cluster with more than one LA County genome. C Assignment of LA County introductions before April 19th, 2020 to lineages. D Observed frequency of different lineages from eight other COVID-19 hotspots from throughout the US and the world

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BMC Genomics

ISSN: 1471-2164

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