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. 2018 Apr 18;7:66. doi: 10.1038/s41426-018-0067-4

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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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Fig. 2 — Phylogenetic tree analysis was performed based on a 717-nt partial sequence of the nucleoprotein gene with the Maximum Likelihood method based on the Tamura 3-parameter model (+G+I) in MEGA7 software¹³. Bootstrap replications were 1000. The sequence of this study is indicated with bold letters. Branch supports are represented by bootstrap values. Bootstrap values <50 are not shown. Branch lengths are measured in the number of substitutions per site