Table 2.
Proportion of children with post-vaccine antibody titer ≥1:32.
| Hemagglutinin | 2006–7 | 2007–8 | ||||
|---|---|---|---|---|---|---|
| PT group (n = 9) | FT group (n = 8) | P† | PT group (n = 27) | FT group (n = 25) | P† | |
| H1 | 9 (100%) | 7 (88%) | 0.47 | 27 (100%) | 24 (96%) | 0.48 |
| H3 | 9 (100%) | 6 (75%) | 0.21 | 20 (74%) | 12 (48%) | 0.05 |
| B/Victoria | 6 (67%) | 3 (38%) | 0.35 | 23 (85%) | 15 (60%) | 0.04 |
| B/Yamagata* | 0 | 0 | - - | 8 (30%) | 5 (20%) | 0.42 |
PT = premature, FT = full-term
*
Not contained in administered vaccine.
†
P for FT vs. PT by chi-square or Fisher exact test, as appropriate