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Table 3 Impact of BCG vaccination on the results obtained by the prolonged test.

From: New tools for detecting latent tuberculosis infection: evaluation of RD1-specific long-term response

  TST+, suspected LTBI, not responding to QFT-IT
  BCG
Response to the prolonged test Unvaccinated
N. 14 (%)
Vaccinated
N. 15 (%)
Unknown
N.7 (%)
Total
N. 36 (%)
No responders N. 25 9 (64.3) 12 (80.0) 4 (57.1) 25 (69.4)
Responders N. 11 5 (35.7) 3 (20.0) 3 (42.9) 11 (30.6)
  1. Footnotes: BCG: Calmette et Guerin; LTBI: latent tuberculosis infection; N: number; QFT-IT: QuantiFERON TB-Gold-In tube; TST: tuberculin skin test.