TABLE 3.

Acute- and convalescent-phase and study SBA titers in vaccine failures

Patient no.	SBA titer at hospital admission	Timing of acute-phase samplea	Convalescent-phase SBA titer	Timing of convalescent-phase samplea	SBA titer at time of study
1	2,048	70	8,192	180	256
2	2	29	128	120	512
3	NAb	NA	NA	NA	32
4	NA	NA	65,536	14	512
5	2	0	8,192	32	128
6	128	0	8,192	88	256
7	2	3	514,288	10	1,024
8	NA	NA	NA	NA	512
9	NA	NA	NA	NA	512

^aDays after hospital admission.

^bNA, not applicable.