Table 2.

Relationship between TST results and CD4⁺ T cell count.

CD4+ T cell count/μL	Presence of active TB disease*	TST positive	TST negative
<200 [<50]	Y (n = 6)	3 (50%) [1]*	3 (50%) [2]*
	N (n = 6)	1 (17%) [0]*	5 (83%)[3]*
≥200	Y (n = 0)	0	0
	N (n = 11)	3 (27%)	8 (73%)

Y: present, N: absent.

(%): percentage of Y or N number in each CD4 category.

*[  ] indicates the number of those with CD4⁺ T cells less than 50.