Table 1.

Proportion of Children Who Were Seroprotected and Seroconverted by Vaccine Type and Strain

	Overall (n = 71), No. (%)	Vaccine Type		P Valuea
		LAIV (n = 25), No. (%)	IIV (n = 46), No. (%)
Seroprotection (1:110) at day 21
A/H1N1	59 (83)	15 (60)	44 (96)	<.001
A/H3N2	54 (76)	15 (60)	39 (85)	.019
B Brisbane	53 (75)	14 (56)	39 (85)	.008
B Phuket	57 (80)	15 (60)	42 (91)	.002
Seroconversion at day 21
A/H1N1	29 (41)	0 (0)	29 (63)	<.001
A/H3N2	27 (38)	4 (16)	23 (50)	.005
B Brisbane	25 (35)	3 (12)	22 (48)	.003
B Phuket	26 (37)	2 (8)	24 (52)	<.001

Abbreviations: IIV, inactivated influenza vaccine; LAIV, live attenuated influenza vaccine.

^aChi-square test or Fisher exact test.