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Reciprocal geometric mean HI titers against A/Swine/IA/00239/04 H1N1 (challenge virus) and A/Swine/IL/02450/08 (vaccine strain)
| Group | A/Swine/IA/00239/04 H1N1 | A/Swine/IL/02450/08 | ||
|---|---|---|---|---|
| Pre‐contact | Post‐contact | Pre‐contact | Post‐contact | |
| PASSIV‐VAC | 17 | 70 | 143 | 111 |
| NAIVE | 10 | 357 | 23 | 113 |
