Table 2. Characteristics of asymptomatic household siblings with normal chest X-ray.
| TST + n = 15 (%) | TST–n = 24 (%) | |
|---|---|---|
| Demographics | ||
| Age in months (mean) | 109 | 106 |
| Range | 71–146 | 86–125 |
| Gender (male) | 9 (60) | 13 (54) |
| Mycobacterial exposure | ||
| BCG vaccinated sibling with TB disease | 13 (87) | 19 (80) |
| Any TB exposure | 15 (100) | 24 (100) |
| Exposure to adult TB case | 0 | 7 (29,100*) |
| Relationship with index case | – | |
| Primary caregiver | 2 (8, 29*) | |
| Relative in household | 4 (17, 57*) | |
| Not within household | 1 (4, 14*) | |
| Average exposure per day | – | |
| ≥12 hours | 6 (25, 86*) | |
| 4–7 hours | 1 (4, 14*) | |
| Average duration of exposure | – | |
| ≥12 weeks | 7 (29, 100*) | |
| Findings | ||
| BMI-for-age percentile <53 | 5 (33) | 4 (17) |
| missing data | 4 (27) | 7 (29) |
°BCG - Bacillus Calmette Guerin. ¹Known TB exposure from any TB case. 2No improvement during a 7–10 day course of amoxicillin. 3Body Mass Index-for-age percentile range: Underweight < 5; Normal weight ≥ 5 and < 85; Overweight ≥ 85 and < 95; Obesity ≥ 95. *Percent of siblings with known exposure, n = 7.