Table 1.

Criteria for including and excluding articles in this study

Including	Excluding
M. tuberculosis studies	Other species of Mycobacteria
Human TB	Animal TB or zoonotic transmission of TB
Whole genome sequencing of at least three M. tuberculosis isolates from distinct people	Less than three isolates from distinct people sequenced and studies designed to investigate isolates from less than three possibly epidemiologically-linked people
Clustering analysis based on 12 or less SNP rule for clustering or possibility to identify clusters of 12 or less SNP of difference	Lack of clustering analysis or clustering analysis based on strains differing by more than 12 SNP, impossible to impose 12 or less rule for clustering
Cluster after sequencing containing three or more isolates	Largest cluster after sequencing containing less than three isolates or impossible to determine clusters of three and more isolates
English language	Any other language than English
Original analysis	Repurposed data or review manuscripts
	Study not available in full text