The reference SARS-CoV-2 amino acid sequences represent the starting point at the left side. The mutations present in each patient’s virus are shown as circles. The colors represent the country where the sample was taken. For example, red is USA; purple is China; yellow is Italy. This image is a snapshot taken on 16 April 2020. The latest version is available from Genomic epidemiology of novel coronavirus – Global subsampling.
Find out about how mutations lead to different viral strains:
N. R. Gough, Defining a New Strain of a Virus. BioSerendipity (18 May 2020) https://www.bioserendipity.com/defining-a-new-strain-of-a-virus/.
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