Table 2. In vitro stimulated responses.

	Seronegative individuals		Seropositive individuals
In vitro stimulated responses	#	%	#	%
No T cell responses	10	23	0	0
CD4 T cell responses only	23	52	0	0
CD8 T cell responses only	1	2	9	16
Both CD4 and CD8 T cell responses	10	23	47	84
Total	44	100	56	100