TABLE 1.

Clustering results and discriminatory power of the genotyping methods

Method	No. of unique isolates	No. of clustered isolates	No. of clusters	No. of distinct types	Clustering rate (%)	HGI
Spoligotyping	2	70	1	3	95.8	0.055
VNTR system with 12 old loci	19	53	10	29	59.7	0.788
VNTR system with 12 old loci + 3 ETRs	29	43	8	37	48.6	0.849
VNTR system with 12 old loci + spoligotyping	31	41	10	41	43.1	0.813
VNTR system with 15 basic loci	53	19	6	59	18.1	0.990
VNTR system with 15 basic loci + spoligotyping	54	18	6	60	16.7	0.991
VNTR system with 15 basic loci + Mtub29	55	17	6	61	15.3	0.992
VNTR system with 24 loci	55	17	6	61	15.3	0.992
VNTR system with 24 loci + spoligotyping	56	16	6	62	13.9	0.993
IS6110-RFLP	66	6	3	69	4.2	0.999