Table 2.

Exposure by dose level and region^a

Group	Dose (IU)	Injection type	No. of participants who received injection no. [mo (day)]
			1 [0]		2 [1 (28)]		3 [3 (84)]
			US	SA	US	SA	US	SA
1	1 × 104	Vaccine	10	10	10	9	9	9
		Placebo	2	2	2	2	2	2
2	1 × 105	Vaccine	20	20	18	20	18	19
		Placebo	4	4	4	4	4	4
3	1 × 106	Vaccine	10	10	9	10	9	8
		Placebo	2	2	2	2	2	1
4	1 × 107	Vaccine	10	10	10	2	10	0
		Placebo	2	2	2	0	2	0
5	1 × 108	Vaccine	10	0	10	0	9	0
		Placebo	2	0	1	0	1	0
Total		Vaccine	60	50	57	41	55	36
		Placebo	12	10	11	8	11	7

^aIU, infectious units; US, United States; SA, Southern Africa (South Africa and Botswana).