Table 2.

Number of ELISPOT Positive Results to Individual Antigens (%) in Controls and E U Subgroups

Study groups	Core	NS3	NS4	NS5	Total
Controls	1/20 (5)	1/20 (5)	1/20 (5)	0/20 (0)	3/80 (4)
Rehabilitation	0/17 (0)	0/17 (0)	2/17 (12)	1/17 (6)	3/68 (4)
Prisoners	1/23 (4)	7/23 (30)	3/23 (13)	5/23 (21)	16/92 (17)
Continued IDUs	1/16 (6)	5/16 (31)	2/16 (13)	2/16 (13)	10/64 (16)
All EUs combined	2/56 (4)	12/56 (23)	7/56 (13)	8/56 (14)	29/224 (13)

NOTE. ELISPOT: Enzyme linked immunosorbent spot; EU: exposed uninfected; IDUs: intravenous drug users.