Fig. 2.

Minimum spanning tree representation of the multiple-locus variable number tandem repeat analysis (MLVA) clustering of the 30 ESBL-positive Klebsiella pneumoniae clinical isolates isolated from patients in five hospitals of Tehran. Each circle represents a unique genotype, numbers under the circles represent the number of hospitals. The colour halo around the circles corresponds to CCs. Circles without a colour halo represent singletons. Numbers on the lines show the number of loci that are different between two MLVA profiles.