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. 2020 Jun 5;11:1316. doi: 10.3389/fmicb.2020.01316

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Copyright © 2020 Sekizuka, Kuramoto, Nariai, Taira, Hachisu, Tokaji, Shinohara, Kishimoto, Itokawa, Kobayashi, Kadokura, Kamiya, Matsui, Suzuki and Kuroda.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Haplotype network using genome-wide single-nucleotide variations (HN-GSNVs) of SARS-CoV-2 isolates in the world. Whole-genome sequences of SARS-CoV-2 isolates from 10 travelers who returned from Egypt and possible patients linked to them (Figure 1) were compared with all GISAID-available SARS-CoV-2 genomes (n = 1,507, updated on March 30, 2020. See Table S1) by median-joining SNV network analysis. The numbers on the edges indicate differential SNVs between pair-wise nodes (isolates). SARS-CoV-2 disseminated from the end of December, 2019, from Wuhan City in China, one of the potential origins of Wuhan-Hu-1, isolated on December 26, 2020 (GenBank ID: MN908947). Wuhan-Hu-1 is plotted at the center of the haplotype network. Currently, at least three clades have disseminated globally in a region-specific manner.