Minimum spanning tree of 26 Bulgarian RR-TB isolates. The numbers on the branches indicate the genetic distance in SNPs differences to the nearest isolate. SNP differences between distant strains cannot be reconstituted by summing the number of SNPs on the branches. SNP: single-nucleotide polymorphism.

 
 
  Part of: Yordanova S, Bachiyska E, Tagliani E, Baykova A, Atanasova Y, Spitaleri A, Cirillo DM (2022) Whole genome sequencing of Bulgarian rifampicin resistant Mycobacterium tuberculosis strains. Folia Medica 64(4): 633-640. https://doi.org/10.3897/folmed.64.e70554