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. 2021 Mar 27;106:228–236. doi: 10.1016/j.ijid.2021.03.068

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© 2021 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Phylogenetic tree based on SARS-CoV-2 full-length genomes.

A total of 744 genomes of SARS-CoV-2 were integrated in a phylogenetic analysis. All genomes were aligned using MAFFT version 7 (Katoh and Standley, 2013). The phylogenetic tree was reconstructed using IQ-TREE with the GTR model, with 1000 ultrafast bootstrap repetitions (Minh et al., 2020), and was visualized with iTOL (Interactive Tree Of Life; https://itol.embl.de/) (Letunic and Bork, 2016). DK, Denmark; NTH, The Netherlands.