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. 2019 Dec 3;10:2765. doi: 10.3389/fmicb.2019.02765

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Copyright © 2019 Mohamed, Ito and Omori.

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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Distribution of sampling time interval and geographical distance among human viruses. (A) Histogram of sampling time intervals between human viruses clustered by genetic distances threshold at the between-household genetic variation. (B) Histogram of sampling time intervals between human viruses clustered by phylogeny and genetic distances threshold at the between-household genetic variation. (C) Histogram of geographical distances between human viruses clustered by genetic distances threshold at the between-household genetic variation. (D) Histogram of geographical distances between human viruses clustered by phylogeny and genetic distances threshold at the between-household genetic variation.