Table 1 Comparison of immunogenicity of 2010-2011 influenza vaccines against H1N1 pdm09 between infection-primed group and vaccine-primed group among the total subjects
IP (n = 80) | VP (n = 228) | P value | ||
|---|---|---|---|---|
Split/subunit ratio | 51/29 | 109/119 | 0.013 | |
Mean age | 8.06 (±4.28) | 10.02 (±3.88) | 0.001 | |
Seroprotection (%) | Baseline | 58.75 (47/80) | 54.82 (125/228) | 0.544 |
1 month | 80.0 (64/80) | 75.00 (171/228) | 0.367 | |
6 months | 70.77 (46/65) | 61.86 (120/194) | 0.032 | |
Seroconversion (%) | 57.5 (46/80) | 35.96 (82/228) | 0.001 | |
GMT (95 % CI) | Baseline | 33.93 (29.80–38.05) | 27.43 (24.69–30.18) | 0.109 |
1 month | 129.96 (99.18–160.74) | 66.46 (58.15–72.76) | 0.002 | |
6 months | 54.50 (42.32–66.67) | 37.11 (33.30–40.92) | 0.150 | |