Table 1

 Demographic and clinical details of study subjects

Diagnosis
Latent TB(n = 42)TB disease(n = 9)Uninfected(n = 50)
*Three children with TB disease did not have TST.
†34 with pulmonary TB; 1 with lymph node TB.
Demographic data
Median age in years(range)9.2(0.6–17.9)3.9(1.2–17.1)6.8(0.4–16.9)
Male23 (55%)6 (67%)32 (64%)
Born in high TB prevalence area37 (88%)7 (78%)48 (96%)
TB contact
    Household†24 (60%)5 (56%)6 (12%)
    Non-household0 (0%)0 (0%)1 (2%)
    Unknown7 (14%)1 (11%)8 (16%)
    None11 (26%)3 (33%)35 (70%)
Clinical
BCG
    Scar present19 (45%)3 (33%)27 (54%)
    History but no scar2 (5%)02 (4%)
    No evidence of prior BCG21 (50%)6 (67%)21 (42%)
Fevers1 (2%)7 (78%)0
Night sweats0 (0%)6 (66%)0
Cough >2 weeks0 (0%)6 (66%)0
Tuberculin skin test
    0–5 mm0 (0%)37 (74%)
    >5–10 mm9 (22%)2 (22%)*9 (18%)
    >10–15 mm11 (26%)1 (11%)4 (8%)
    >15 mm22 (52%)3 (33%)0
Chest radiograph
    Normal38 (90%)3 (33%)12 (24%)
    Abnormal0 (0%)6 (66%)0
    Not done/unavailable4 (10%)38 (76%)