Figure. . Dendrogram built on 105 Mycobacterium tuberculosis clinical isolates from Delhi based on spoligotyping results using the Taxotron software package (PAD Grimont, Taxolab, Institut Pasteur, Paris). This phylogenetic tree, based on the 1-Jaccard Index (8) and drawn using the unweighted pair group method with arithmetic averages (UPGMA), shows the presence of five major shared types (ST) of spoligotypes in Delhi; ST26 (Central Asian Family 1 or CAS1), ST1 (Beijing Family), ST54 (also newly designated as T1 ancestor), ST119 (X1 family) and ST11 (East African Indian 3 or EAI3 family). The strain designation appears left of the binary spoligotyping profile, and shared-type designations appear on the right of the spoligotype. Orphan patterns (unique isolates) have not been provided with a spoligotype designation on this tree.