Genetic Diversity of Mycobacterium tuberculosis Complex Isolated from Tuberculosis Patients in Bahir Dar City and Its Surroundings, Northwest Ethiopia

Figure 2

Distribution of mycobacterial lineages in the different zones of the Amhara Region, northwest Ethiopia. Five different lineages were identified. The Euro-American (EA) lineage is represented by yellow segments with a frequency of 50% (1/2) for North Gondar, 47.4% (27/57) for South Gondar, 54.2% (13/24) for East Gojjam, 44.2% (19/43) for West Gojjam, 75% (15/20) for Bahir Dar Special Zone, 50% (10/20) for Awi, and 50% (1/2) for North Wollo zone. The East-African Indian (EAI) lineage is represented by red segments with a frequency of 50% (1/2) for North Gondar, 31.6% (18/57) for South Gondar, 37.5% (9/24) for East Gojjam, 41.9% (18/43) for West Gojjam, 20% (4/20) for Bahir Dar Special Zone, 35% (2/20) for Awi, and 50% (1/2) for North Wollo zone. The Indo-Oceanic (IO) lineage is shown by blue segments with the frequency of 5.26% (3/57) for South Gondar, 4.17% (1/24) for East Gojjam, and 10% (2/20) for Awi Zone. The M. africanum (MA) lineage is represented by black segments with a frequency of 12.3% (7/57) for South Gondar, 4.17% (1/24) for East Gojjam, 14% (6/43) for West Gojjam, and 5% (1/20) each for Bahir Dar Special and Awi Zones. M. bovis (MB) was identified only in patients with TB lymphadenitis (TBLN) located in South Gondar with the prevalence of 3.51% (2/57) showed by a white coloured segment.