TABLE 1.

Timing of specimen collection for primary study by week after vaccination

Wk after vaccination	No. of specimens collecteda				Total no. of specimens
	± 0 days	± 1 day	± 2 days	± 3 days
4	24	36	0	0	60
5	27	33	0	0	60
6	28	32	0	0	60
7	27	33	0	0	60
8	18	28	14	0	60
9	17	31	12	0	60
10	10	11	10	8	39
11	7	11	4	9	31
12	2	6	5	4	17
13	7	6	5	9	27
14	7	8	2	3	20
15	4	12	7	2	25
≥16	NAb	NA	NA	NA	17
Total	178	247	59	35	536

^aNumber of specimens collected within the indicated number of days of the target date for specimen collection for different lengths of time after vaccination. 

^bNA, not applicable.