TABLE 2.

Clustering results by genotyping methods

Methoda	No. of unique isolates	No. of clustered isolates	No. of clusters	No. of distinct types	Clustering rate (%)b
Spoligotyping	56	98	16	72	53.2
MIRU-VNTR 12 old	84	70	20	104	32.5
MIRU-VNTR 12 old + 3 ETR	103	51	13	116	24.7
MIRU-VNTR 12 old + spoligotyping	106	48	14	120	22.1
IS6110-RFLP	115	39	13	128	16.9
Low-copy-no. isolates	8	6	2	10	NR
High-copy-no. isolates	107	33	11	118	NR
MIRU-VNTR 15	115	39	12	127	17.5
MIRU-VNTR 24	117	37	11	128	16.9
MIRU-VNTR 15 + spoligotyping	120	34	11	131	14.9
MIRU-VNTR 24 + spoligotyping	120	34	11	131	14.9

^aMIRU-VNTR 12 old, original set of 12 MIRU-VNTR loci as described previously (26, 27), MIRU-VNTR 12 old + 3 ETR, original set of 12 MIRU-VNTR loci plus three nonredundant exact-tandem-repeat loci (8), MIRU-VNTR 15 and 24, discriminatory subset of 15 loci and full set of 24 loci (Table 1) (24).

^bNR, not relevant.