TABLE 5.

Postchallenge neutralization titers

Sample no.a	Immunizedb	Time (wk)c	90% PRNT	GMT
YFV/dengue-2 virus
2.11	−	3	1:160	1:60d,e
2.12	−	3	1:80
2.13	−	3	1:80
2.14	−	3	1:20
2.15	−	3	1:80
2.16	−	3	1:160
2.17	−	3	1:40
2.18	+	3	1:80	1:134d,f
2.19	+	3	1:320
2.20	+	3	1:80
2.21	+	3	1:160
Mock			<1:20
Positive			1:4,000
YFV/dengue-4 virus
4.13	−	3	1:160	1:101e,g
4.14	−	3	1:160
4.15	−	3	1:40
4.16	+	3	1:320	1:501f,g
4.17	+	3	1:320
4.18	+	3	1:1280
4.19	+	3	1:320
4.20	+	3	1:160
Mock			<1:20
Positive			1:8,000

^aMock and positive are described in Materials and Methods.

^b−, not immunized; +, immunized.

^cWeeks postchallenge.

^dP < 0.05.

^eP < 0.05.

^fP < 0.05.

^gP < 0.05.