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. 2018 Jul 24;8:11171. doi: 10.1038/s41598-018-29560-x

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Maximum clade credibility tree of arteriviruses representing all currently known species based on the sequence of ORF 1b. Phylogenetic inference using Bayesian phylogenetics shows that OSV-1 variants A–C (marked in red) cluster together but are separate from other arteriviruses. The numbers at the different nodes indicate the posterior probabilities of the accuracy of loci, given the used data and chosen model and parameters. The tree is drawn to scale, with branch lengths representing the number of substitutions per site. GenBank accession numbers of all used sequences are included in brackets. *Previous designation (C/P) of lactate dehydrogenase-elevating virus strains 2/1. ^†As of now, these viruses have not yet been described and are known only as ‘rat/rodent arterivirus(es)’.