Children n = 213 | QFT-Plus | TST | Bacteriological tests | |||||||
---|---|---|---|---|---|---|---|---|---|---|
+ | ‒ | Indeterminate | + | ‒ | No order | + | ‒ | No order | ||
Group 1 confirmed TB household contacn = 156 | LTBI n = 30 | 24 | 24 | 23 | 1 | |||||
6 | 5 | 1 | 5 | 1 | ||||||
TB n = 20 | 16 | 16 | 1 | 15 | ||||||
1 | 1 | 1 | ||||||||
2 | 2 | 2 | ||||||||
1 | 1 | 1 | ||||||||
no LTBITB n = 106 | 1 | 1 | 1 | |||||||
2 | 2 | 2 | ||||||||
103 | 103 | 19 | 84 | |||||||
Group 2 excluded TB household contact n = 54 | LTBI n = 6 | 1 | 1 | 1 | ||||||
3 | 3 | 3 | ||||||||
2 | 2 | 2 | ||||||||
TB n = 2 | 1 | 1 | 1 | |||||||
1 | 1 | 1 | ||||||||
no LTBI/TB n = 46 | 5 | 5 | 2 | 3 | ||||||
5 | 5 | 1 | 4 | |||||||
35 | 35 | 10 | 25 | |||||||
1 | 1 | 1 | ||||||||
Group 3 no known contact exposure n = 3 | no LTBI/TB n = 3 | 3 | 3 | 1 | 2 | |||||
Total | 213 (100%) | 42 (19.7%) | 170 (79.8%) | 1 (0.47%) | 61 (28.6%) | 143 (67.1%) | 9 (4.2%) | 3 (1.4%) | 84 (39.4%) | 126 (59.1%) |
1–4 age (n = 79) | 5–14 age (n = 125) | ||||||
---|---|---|---|---|---|---|---|
QFT-Plus | TST | QFT-Plus | TST | ||||
+ | ‒ | Total | + | ‒ | Tot al | ||
+ | 12a | 0 | 12 | + | 29b | 0 | 29 |
‒ | 4 | 63a | 67 | ‒ | 16 | 80b | 96 |
Total | 16 | 63 | 79 | Total | 45 | 80 | 125 |
Risk of TB infection | Patient groups |
---|---|
High (close contact with a smear-positive TB patient) | |
≥ 15 mm | Immunocompetent, BCG-vaccinated > 12 months of age |
≥ 10 mm | Immunocompetent, non-BCG-vaccinated or BCG-vaccinated in the first year of life |
≥ 5 mm | non-BCG-vaccinated |
Low (other contacts of TB patient) | |
≥ 15 mm | Immunocompetent, non-BCG-vaccinated or BCG-vaccinated in the first year of life, TST is not recommended for those vaccinated after 12 months of age |
≥ 10 mm | HIV and other factors of increased risk of developing TB, regardless of BCG vaccination |
Children | QFT-Plus n = 213 | TST n = 204 | ||||||
---|---|---|---|---|---|---|---|---|
Age | Number | + | ‒ | Indeterminate | Number | (≥ 10 mm) | (< 10 mm) | No order |
1–4 | 83 | 13 (15.7%) | 70 (84.3%) | 0 | 79 | 17 (21.5%) | 62 (78.5%) | 4 |
5–14 | 130 | 29 (22.3%) | 100 (76.9%) | 1 (0.77%) | 125 | 45 (36%) | 80 (64%) | 5 |
Total | 213 | 42 (19.7%) | 170 (79.8%) | 1 (0.46%) | 204 | 62 (30.4%) | 142 (69.6%) | 9 |
Characteristics | Number (n = 213) | % |
---|---|---|
Sex | ||
Male | 98 | 46 |
Female | 115 | 54 |
Age (years) | ||
1–4 | 83 | 39 |
5–14 | 130 | 61 |
Nationality | ||
Polish | 205 | 96 |
English | 2 | 1 |
Danish | 2 | 1 |
Ukrainian | 4 | 2 |
BCG vaccination | ||
the second day of life | 208 | 97.5 |
6 years | 1 | 0.5 |
no BCG vaccination | 4 | 2 |
Exposure to tuberculosis (children groups) | ||
1: confirmed TB household contact | 156 | 73.2 |
2: excluded TB household contact | 54 | 25.4 |
3: unknown contact exposure | 3 | 1.4 |