Fig. 5

Distribution of MTBC lineages over time by region. MTBC genotype distribution by region over time corresponding to results presented in Additional file 1: Figure S3. The year 1990 represents all studies from 1990 to 1999, the year 2000 represents all studies from 2000 to 2009, and the year 2010 represents all studies from 2010 to 2017. Indo-Oceanic lineage 1 is shown in pink, East Asian lineage 2 is shown in blue, East African-Indian lineage 3 is shown in purple, Euro-American lineage 4 is shown in orange, and West African lineages 5 and 6 are shown in green. Other/unknown strains are shown in gray and represent animal lineages, lineage 7, and strain types that were not identified by authors either due to low frequency or unknown genetic patterns. Strain counts and sample sizes were summed across all studies within the given regions and time periods to get proportions. There was no data from East Asia, West Asia, and Oceania in the 1990s, and therefore, these years are left blank