Fig. 1

Core genome-based phylogeny: a The core genome-based phylogeny was verified by in silico MLST, ANI and dDDH. The red dotted line represents the cut-off line that separates the 13 mislabelled strains based on ANI and dDDH results. The remaining 49 strains are considered to be valid strains. b Core genome-based un-rooted phylogenetic tree. All the mislabelled strains are shown to be distinct from other valid strains. The remaining 49 strains are closely related to each other