FIGURE 2.

Core genome-based phylogenetic analysis of ST15-KL19 Klebsiella pneumoniae isolates. (A) High-resolution global neighbor-joining phylogenetic tree comprising all ST15-KL19 genomes from the Pathogenwatch database (n = 217). (B) Zoomed-in view of the focal clade highlighting the 16 study isolates alongside their closest public relatives from human infections (Portugal, France, USA) and poultry production in northern Portugal. Branch lengths represent pairwise SNP distances derived from the concatenated alignment of core genome sequences. Geographic regions and isolate sources are indicated. The full uncompressed phylogenetic tree is available as Supplementary Figure 1.