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Spoligotype pattern of clustered M. tuberculosis strains in the study. aAs identified in SpolDB4.0; SIT, spoligotype international type; Nb, number of isolates (as a percentage of total M. tuberculosis strains in the study); cfilled boxes represent positive hybridization while empty boxes represent absence of spacers; dlabel defining the lineage/sub lineage; ND, not yet determined in SpolDB4.0.
