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Minimum spanning tree showing core genome multilocus sequence typing (cgMLST) of the 57 carbapenem-resistant Klebsiella pneumoniae (CRKP) isolates, showing five cluster types numbered consecutively. Each circle represents an allelic profile. Colors of circles indicate the different sequence types (STs). Cluster types consist of closely related genotypes (≤15 allele differences). The numbers on the connecting lines illustrate the numbers of target genes with different alleles.
