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. 2018 Oct 24;15:164. doi: 10.1186/s12985-018-1063-y

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Phylogenetic trees of HA (positions 1–1701), NA (positions 1–1410), PB2 (positions 1–2280), PB1 (positions 1–2274), PA (positions 1–2151), NP (positions 1–1497), M (positions 1–982), and NS (positions 1–838) segments from the novel reassortant H6N1 avian influenza viruses, ZJ-1664 and ZJ-1667. The tree was created by the maximum likelihood method and bootstrapped with 1000 replicates using the MEGA6 software version 6.0. The H6N1 viruses characterized are indicated by a triangle in red, and the H6N1 influenza virus responsible for human infection in 2013 is indicated by a dot in red. The scale bar represents the distance unit between sequence pairs