Fig 1.

MST of 28 isolates from a nosocomial outbreak investigation (30). The distance is based on 2,536 target genes with pairwise ignore missing values. Isolates are colored according to the species. Clustering of outbreak strains is visible (MST cluster 1). Also, two environmental isolates from the same location cluster together (cluster 2) and the remaining environmental and reference strains of this study are distant to all other strains, but still cluster on species level (as indicated by the color of nodes).