Volume 8, Number 11—November 2002
THEME ISSUE
Tuberculosis Genotyping
Tuberculosis Genotyping Network, United States
Identifying the Sources of Tuberculosis in Young Children: A Multistate Investigation
Sumi J. Sun*
, Diane E. Bennett†, Jennifer Flood*, Ann M. Loeffler*, Steve Kammerer†, and Barbara A. Ellis†
, Diane E. Bennett†, Jennifer Flood*, Ann M. Loeffler*, Steve Kammerer†, and Barbara A. Ellis†
Table 6
Characteristics of source patients in confirmed patient pairsa
| Source patient characteristics | Confirmed sources for secondary patients <5 yrs of age n=44 (%) | Confirmed sources for secondary patients ≥15 ys of age n=240 (%) |
|---|---|---|
| Mean age, yrs | 31 | 38 |
| Female | 18 (41) | 103 (43) |
| Race/ethnicityb | ||
| Black, non-Hispanic | 20 (45) | 148 (62) |
| Hispanic | 17 (39) | 23 (10) |
| Asian | 5 (11) | 19 (8) |
| White, non-Hispanic | 0 | 48 (20) |
| Native American or Alaskan Native | 2 (5) | 2 (1) |
| Foreign-bornc | 20 (45) | 56 (23) |
| Bacteriologic results, sputumd | ||
| Smear positive/culture positive | 34 (81) | 200 (85) |
| Smear negative/culture positive | 8 (19) | 33 (14) |
| Smear negative/culture negative | 0 | 1 (<1) |
| Cavitary chest radiographe | 27 (64) | 125 (53) |
| Provider typef | ||
| Health department | 25 (57) | 141 (60) |
| Private provider | 9 (20) | 43 (18) |
| Both | 10 (23) | 52 (22) |
| Directly observed therapy b,g | 30 (68) | 198 (84) |
| Previous diagnosis of TBh | 6 (14) | 27 (11) |
| Shared household with secondary case b,i | 32 (91) | 116 (50) |
aConfirmed patient pairs include source patients who transmitted TB to young children and source patients who transmitted TB to adolescent and adult patients.
bChi-square statistic, p<0.05.
cCountry of origin unknown for one patient.
dExcludes eight patients in whom either the culture or smear was not done.
eChest radiograph results unknown for two patients.
fProvider type unknown for four patients.
gCompared to patients on self-administered therapy only. Directly observed therapy status unknown for six patients.
hHistory of TB unknown for two patients.
iRelationship to secondary case unknown for 19 patients.
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