Volume 8, Number 11—November 2002
THEME ISSUE
Tuberculosis Genotyping
Tuberculosis Genotyping Network, United States
Genotyping Analyses of Tuberculosis Cases in U.S.- and Foreign-Born Massachusetts Residents
Sharon Sharnprapai*
, Ann C. Miller*, Robert Suruki*, Edward Corkren*, Sue Etkind*, Jeffrey Driscoll†, Michael McGarry†, and Edward Nardell*‡
, Ann C. Miller*, Robert Suruki*, Edward Corkren*, Sue Etkind*, Jeffrey Driscoll†, Michael McGarry†, and Edward Nardell*‡
Table 5
Epidemiologic connection among clustered tuberculosis (TB) cases in Cluster Investigation Study, 1998–2000
| Cluster contains | Overall (%)a |
Many (>6 copies of IS6110) (%) |
Few (≤6 copies of IS6110) (%) |
||||||
|---|---|---|---|---|---|---|---|---|---|
| No. Cases | Definite/possible | Unlikely | No. Cases | Definite/possible | Unlikely | No. Cases | Definite/possible | Unlikely | |
| U.S.-born only | 42 | 26 (62) | 16 (38) | 33 | 26(79) | 7(21) | 9 | 0 | 9 (100) |
| U.S.-born and foreign-born | 67 | 28 (42) | 39 (58) | 30 | 19 (63) | 11 (37) | 37 | 9 (24) | 28 (76) |
| Foreign-born only | 43 | 14 (33) | 29 (67) | 27 | 12 (44) | 15 (56) | 16 | 2 (13) | 14 (87) |
| Total | 152 | 68 (45) | 84 (55) | 90 | 57 (63) | 33 (37) | 62 | 11 (18) | 51 (82) |
a%, epidemiologic link.
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