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Hemagglutination inhibition (HI) responses to trivalent influenza vaccine
| Virus | GM HI Titer | Fold increase (SD) | |
|---|---|---|---|
| Baseline (SD) | d14 (SD) | ||
| H1N1 A/California/7/2009‐likea | 22 (157) | 1185 (3007) | 51 (149) |
| H3N2 A/Perth/16/2009‐likea | 21 (225) | 247 (597) | 12 (39.7) |
| B/Brisbane/6/60/2008‐likea | 5.3 (14) | 119 (112) | 25 (46) |
| B/Wisconsin/1/2010‐like | 3.6 (7) | 69 (77) | 21 (42) |
Viruses included in the 2011‐2012 trivalent seasonal vaccine.
