Volume 12, Number 9—September 2006
Research
Differentiation of Tuberculosis Strains in a Population with Mainly Beijing-family Strains
Vladyslav Nikolayevskyy*, Krishna Gopaul*, Yanina Balabanova*†, Timothy Brown*, Ivan Fedorin†, and Francis Drobniewski*
Table 2
Prevalence of Beijing strains in clusters (15-loci MIRU-ETR analysis)*†
| Cluster no. | Size | No. repeats in MIRU-ETR loci |
||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MIRU |
ETR |
|||||||||||||||
| 2 | 4 | 10 | 16 | 20 | 23 | 24 | 26 | 27 | 31 | 39 | 40 | A | B | C | ||
| 1 | 3 | 2 | 2 | 3 | 1 | 2 | 5 | 1 | 4 | 3 | 3 | 2 | 4 | 3 | 2 | 3 |
| 2 | 2 | 2 | 2 | 3 | 3 | 2 | 6 | 1 | 5 | 3 | 3 | 2 | 5 | 3 | 2 | 3 |
| 3 | 3 | 2 | 2 | 3 | 3 | 2 | 5 | 1 | 5 | 3 | 4 | 3 | 3 | 4 | 2 | 3 |
| 4 | 75 | 2 | 2 | 3 | 3 | 2 | 5 | 1 | 5 | 3 | 5 | 3 | 3 | 4 | 2 | 3 |
| 5 | 3 | 2 | 3 | 3 | 3 | 2 | 5 | 1 | 5 | 3 | 5 | 3 | 3 | 4 | 2 | 3 |
| 6 | 2 | 2 | 2 | 1 | 3 | 2 | 5 | 1 | 7 | 3 | 5 | 3 | 3 | 4 | 2 | 3 |
| 7 | 31 | 2 | 2 | 3 | 3 | 2 | 5 | 1 | 7 | 3 | 5 | 3 | 3 | 4 | 2 | 3 |
| 8 | 2 | 2 | 2 | 3 | 3 | 2 | 5 | 1 | 3 | 3 | 6 | 3 | 3 | 4 | 2 | 3 |
| 9 | 2 | 2 | 2 | 7 | 2 | 2 | 5 | 1 | 1 | 3 | 2 | 2 | 3 | 4 | 2 | 4 |
| 10 | 3 | 1 | 2 | 4 | 3 | 2 | 5 | 1 | 5 | 3 | 2 | 2 | 5 | 2 | 2 | 1 |
*MIRU, mycobacterial interspersed repetitive units; ETR, exact tandem repeats.
†Clusters 3–8 had 100% Beijing strains; the other clusters had none.
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