Table 2. Numbers and frequencies of strains clustered assorted by spoligotyping from 2009 years in Beijing.

Spoligotyping Parameter	Value
No. of strains studied	1585
No. of clusters	36
No. of unknown spoligotype	84
Mean No. of strains per cluster	41.22
No.(%) of clustered strains	1484 (93.62)
No.(%) of unclustered strains	101 (6.37)