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. 2021 Feb 19;11:4253. doi: 10.1038/s41598-021-83578-2

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© The Author(s) 2021

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Phylogenetic tree of the spa types detected using the neighbour-joining method. The isolates were grouped in three clades, clade 1 containing isolates belonging to spa types t044, t267, t786 and t127, clade 2 containing isolates of spa t304, t037 and t1622 and clade 3 containing isolates from spa t688, t223 and t6978.