Fig. 2

Temporal MTB lineages distribution in Oman, 20,019 − 2018. Figure shows the proportion of spoligotypes categories across each year. No clade data were available for 2008. CAS: The 735 isolates were classified into four major phylogenetic lineages (Lineage 1 – Indo-Oceanic, Lineage 3 – East-African Indian [EAI], Lineage 4 – Euro-American, and Lineage 2 – East-Asian [Beijing]) and assigned to Shared International Types (SITs) using the SITVIT2 database. The most prevalent SIT families were SIT26 (CAS1-Delhi) and SIT11 (EAI3-IND), with fluctuating yearly prevalence. Other less common SIT families included SIT1 (Beijing), SIT42 (LAM9), SIT50 (Haarlem3), and SIT53 (T1). No significant variation in SIT distribution was observed by patient nationality.