The tree is created using UPGMA and distances shown are computed based on pairwise allelic differences (hamming distance). Missing genes are not included in the count.
Mathers AJ et.al
The 1928D Klebsiella pneumoniae cgMLST schema is created from 270 reference genomes giving the scheme 3450 core genes. All genes included in the schema are present in at least 95% of reference genomes.