Table 3.

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

	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)

Footnotes: BCG: Calmette et Guerin; LTBI: latent tuberculosis infection; N: number; QFT-IT: QuantiFERON TB-Gold-In tube; TST: tuberculin skin test.