Table 1.

Cohort demographic characteristics

							Vaccination interval, years
Cohort	Vaccine	Previous inoculation	No. of volunteers	Mean Age, years	White, %	Female, %	Mean	Range
1	DEN1a	DEN4b	8	41.0	62	50	3.6	1.3 – 7.5
2	DEN1a	DEN2c	7	38.4	0	28	2.5	2.1 – 3.0
3	DEN2c	DEN4b	8	38.2	12	50	4.5	0.6 – 6.6
4	DEN2c	DEN1a	7	32.7	28	43	2.7	1.9 – 3.6
Placebo	Diluent	Various	6	40.2	67	83	3.3	0.6 – 6.1

NOTE. ^a DEN1 vaccine is rDEN1Δ30.

^bVolunteers previously vaccinated with rDEN4Δ30 or rDEN4Δ30-200,201.

^cDEN2 vaccine is rDEN2/4Δ30.