Table 1. Immunogenicity of inactivated influenza H7N9 whole virus vaccine in ferrets.

	Group 1	Group 2	Group 3
HA (μg/dose)	0	1.5	1.5
Al(OH)3 (μg/dose)	300	0	300
No. of animals	4	4	4
HI Seroconversion
Prevaccination	0/4	0/4	0/4
Post dose 1	0/4	0/4	4/4
Post dose 2	0/4	4/4	4/4
HI GMT
Prevaccination	<10	<10	<10
Post dose 1	<10	<10	48 (34–67) a
Post dose 2	<10	17 (9–33)	190 (98–396)
Nt Seroconversion
Prevaccination	0/4	0/4	0/4
Post dose 1	0/4	0/4	4/4
Post dose 2	0/4	4/4	4/4
Nt GMT
Prevaccination	<40	<40	<40
Post dose 1	<40	<40	48 (34–67)
Post dose 2	<40	80 (30–213)	640 (143–2189)

^aGeometric mean titers (95% confidence interval)