Minimum spanning trees of MTC isolates typed via both spoligotyping and MIRU-VNTR, categorized according to patient resident status and presence of multidrug-resistance (MDR) (yellow = resident with non-MDR-TB, green = non-resident with non-MDR-TB, blue = resident with MDR-TB, red = non-resident with MDR-TB).

<p>Each circle represents a genotype and the sizes of the circles are proportionate to the number of members in each group. The distance between circles represents how closely related the different genotypes are to each other. 1A) MTC isolates from the earlier 2006-2007 phase. 1B) MTC isolates from the later 2008-2012 phase.