Table 2.
Contacts screened for and diagnosed with latent tuberculosis infection in contact investigations in The Netherlands, 2006–2010.
| Smear-positive pulmonary PTB |
Smear-negative culture-positive pulmonary PTB |
|||||
|---|---|---|---|---|---|---|
| Number screened for LTBI (n) | Number with LTBI (n) | Proportion infected (%) | Number screened for LTBI (n) | Number with LTBI (n) | Proportion infected (%) | |
| 1st Ring | 10,108 | 1359 | 13.4 | 2512 | 184 | 7.3 |
| 2nd Ring | 14,651 | 878 | 6.0 | 2523 | 114 | 4.5 |
| 3rd Ring | 11,233 | 350 | 3.1 | 918 | 33 | 3.6 |
| Total | 35,992 | 2587 | 7.2 | 5954 | 331 | 5.6 |
LTBI = latent tuberculosis infection; PTB = pulmonary tuberculosis.