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Proportion of pigs ever virus isolation (VI) positive for nasal swab after H3N2 challenge 12 weeks post‐vaccination
| Treatment | Ever positive for nasal swab VI | Positive on last day | Proportion positive (95CL) | P‐value |
|---|---|---|---|---|
| Control | 24/37 (65%) | 6/37 (16%) | 0.65 (0.50, 0.78) | 0.029 |
| Vaccine | 19/45 (42%) | 0/45 (0%) | 0.42 (0.30, 0.56) |
95CL, upper and lower 95% confidence limits; VI, virus isolation.
