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. 2013 Aug 8;7(8):e2360. doi: 10.1371/journal.pntd.0002360

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© 2013 Dubot-Pérès et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Genotype 1 subtree, 843 sequences, from tree performed with the 39 Lao dengue 1 envelope sequences produced in this study aligned with the 1,318 DENV-1 almost complete sequences (>10,000 bases) downloaded from HFVdb. Evolutionary branches that do not include 2007–2010 Lao DENV-1 strains are not shown to increase the legibility. Origin, country (ISO 3166 code) and year of strains within these branches are indicated. The sequences from the Latsavang outbreak (XB) are indicated by red dots. The sequences from Luang Namtha (LNT) are indicated by squares, the one from Salavan (SV) by triangles and the ones from Vientiane (UI) by lozenges. Sequences from 2007 are in yellow, the ones from 2008 (except the ones from Latsavang) are in purple, the ones from 2009 in blue and the ones from 2010 in green. Groups of sequences supported by a high bootstrap value (>90) that contain at least one of Lao sequence are designated as cluster (1 to 7).