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| HAI Antibody Post Dose 2 | |||
| Dosage/µg HA2 | No.3 | No. (%) ≥4 Fold Increase4 | No. (%) ≥1∶32 |
| 0 | 25 | 0 | 0 |
| 7.5 | 21 | 2 (9.5) | 0 |
| 15 | 21 | 2 (9.5) | 1 (5) |
| 45 | 24 | 6 (25) | 0 |
| 90 | 22 | 8 (36) | 1 (5) |
Hemagglutination-inhibition antibody assays at primary study 'site.
As determined in single redial immunodiffusion assays.
Number of subjects in evaluation.
Increasing dosage induced increased % increase; logistic regression, p = .001.
