Fig. 1: Genomic features of the 136 K. pneumoniae isolates from bloodstream infection.

A A maximum likelihood phylogeny showing the year of isolation and the most frequent sequence types (ST), clonal groups (CG; represented by three or more genomes), and sublineages (SL; represented by four or more genomes). The midpoint-rooted tree is calculated using single nucleotide polymorphic sites from the sequence alignment of 3,511 concatenated core genes. Tree scale represents the number of substitutions per site. The barplots show the proportion of (B) ST (C) CG and (D) SL by sampling year. The numbers above the bars in panel B indicate the number of isolates per year. For visual clarity, only the most frequent ST, CG and SL are shown in colored blocks, while less frequent ones are grouped together as “others” in gray blocks.