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Efficacy of CAIV-T on culture-confirmed influenza infection
| CAIV-T subject (%) | Placebo subject (%) | Efficacy (%) (95% CI) | |
| Number of subjects | 1656 | 1115 | |
| All culture-confirmed influenza | 50 (3.0) | 131 (11.7) | 74.3 (64.1, 81.8) |
| A/H1N1 (including H1N2) | 20 (1.2) | 76 (6.8) | 82.3 (7.07, 89.8) |
| A/H3N2 | 4 (0.2) | 24 (2.2) | 88.8 (67.3, 97.2) |
| B | 26 (1.6) | 35 (3.1) | 50.0 (14.5, 71.1) |
