Volume 8, Number 11—November 2002
THEME ISSUE
Tuberculosis Genotyping
Tuberculosis Genotyping Network, United States
National Tuberculosis Genotyping and Surveillance Network: Analysis of the Genotype Database
Lauren S. Cowan* and Jack T. Crawford*
Table 1
Distribution of isolates and fingerprint patterns by number of copies of IS6110
| IS6110 copy no. | No. patterns | No. isolates | No. clustersa | No. clustered isolates (%) | Average cluster size (range) |
|---|---|---|---|---|---|
| 0 | 1 | 22 | 1 | 22 (100) | 22 (22) |
| 1 | 17 | 610 | 9 | 602 (99) | 67 (2–291) |
| 2 | 36 | 759 | 16 | 739 (97) | 46 (2–456) |
| 3 | 92 | 345 | 40 | 293 (85) | 7.3 (2–49) |
| 4 | 102 | 456 | 28 | 382 (84) | 14 (2–212) |
| 5 | 119 | 237 | 37 | 155 (65) | 4.2 (2–13) |
| 6 | 121 | 209 | 21 | 109 (52) | 5.2 (2–20) |
| 7 | 217 | 332 | 40 | 155 (47) | 3.9 (2–29) |
| 8 | 364 | 474 | 56 | 166 (35) | 3.0 (2–12) |
| 9 | 489 | 699 | 78 | 288 (41) | 3.7 (2–20) |
| 10 | 681 | 1,108 | 112 | 539 (49) | 4.8 (2–105) |
| 11 | 737 | 1,143 | 116 | 522 (46) | 4.5 (2–70) |
| 12 | 738 | 1,067 | 114 | 443 (42) | 3.9 (2–27) |
| 13 | 663 | 906 | 83 | 326 (36) | 3.9 (2–23) |
| 14 | 505 | 653 | 51 | 199 (30) | 3.9 (2–27) |
| 15 | 333 | 428 | 35 | 130 (30) | 3.7 (2–15) |
| 16 | 225 | 282 | 17 | 74 (26) | 4.4 (2–21) |
| 17 | 169 | 236 | 16 | 83 (35) | 5.2 (2–46) |
| 18 | 128 | 143 | 9 | 24 (17) | 2.7 (2–5) |
| 19 | 121 | 149 | 17 | 45 (30) | 2.6 (2–7) |
| 20 | 118 | 172 | 23 | 77 (45) | 3.3 (2–14) |
| 21 | 81 | 248 | 15 | 182 (73) | 12 (2–100) |
| 22 | 48 | 182 | 12 | 146 (80) | 12 (2–102) |
| 23 | 13 | 13 | 0 | ||
| 24 | 5 | 5 | 0 | ||
| 25 | 2 | 2 | 0 | ||
| 26 | 1 | 1 | 0 | ||
| 27 | 1 | 1 | 0 | ||
| 28 | 1 | 1 | 0 | ||
| All | 6,128 | 10,883 | 946 | 5,701 (52) | 6.0 (2–456) |
aNumber of fingerprint patterns reported for more than one isolate.
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