Table 1. Vaccine regimens and intervals of each group.

Group	IIV3 routea	Vaccine Regimen		Prime-boost Interval
		Prime	Boost
1	ID	4mg HA DNA	2012/13 seasonal IIV3	3.5 months
2	IM
3	ID	2012/13 seasonal IIV3	2013/14 seasonal IIV3	10 months
4	IM
5	ID	HA DNA and 2012/13 seasonal IIV3	2013/14 seasonal IIV3
6	IM

^a Each administration of IIV3 by IM route contains 45mg total HA, while IIV3 by ID route contains 27mg total HA