Table 1. Normal Donor Patient demographics.

Pt ID	Age	Gender	Draw Date	HAI titer*
1	47	M	07/2009	10
2	48	F	07/2009	<10
3	41	F	07/2009	<10
4	49	F	07/2009	<10
5	33	F	07/2009	<10
6	49	F	08/2009	<10
7	49	F	08/2009	<10
8	25	F	08/2009	10
9	20	F	08/2009	40
10	20	F	12/2009	<10
11	20	M	04/2010	40
12	30	M	04/2010	320 #
13	39	F	04/2010	40 #
14	22	F	04/2010	160 #
15	18	F	04/2010	640
16	30	F	05/2010	80
17	21	F	05/2010	<10
18	31	F	06/2010	40
19	47	F	07/2010	20
20	19	F	07/2010	10
21	20	M	07/2010	40
22	41	M	08/2010	10
23	24	F	08/2010	20 #
24	41	F	08/2010	10
25	33	M	08/2010	40
26	37	F	10/2010	640 #
27	40	F	10/2010	40

^*HAI titer to the HA derived from A/California/04/09.

^#pandemic H1N1 vaccine received prior to time of blood draw.