Table 3.

Post-dose 5 immune responses in subjects who received MV or placebo according to whether they developed definite TB during prospective follow up.

	MV					Placebo
	Definite TB		No definite TB			Definite TB		No definite TB
	N	Mean	N	Mean	P value	N	Mean	N	Mean	P value
IFN-γ response, pg/ml	14	191	498	545	0.3533	28	202.5	484	435.1	0.0080
Proliferative index	13	3.8	406	2.7	0.3557	27	2.7	392	1.9	0.9515
Antibody response to LAM, OD	28	0.53	797	0.61	0.5736	42	0.51	773	0.47	0.7482

P values by Mann-Whitney U test

IFN-γ response, interferon gamma response to MV soniciate; LAM, lipoarabinomannan; MV, Mycobacterium vaccae; OD, optical density; proliferation index is defined as the ratio of counts per minute in the well stimulated with MV sonicate over the counts per minute in the medium control well; TB, tuberculosis