Table 1.
Serological analysis of serum samples from pregnant sows on farms on Jeju Island.
| Delivery Date | −70 | −49 | −28 | 20 | 40 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day Post-Vaccination (dpv) | 0 | 21 | 42 | 62 | 102 | ||||||||
| 1st Vaccination | 2nd Vaccination | 3rd Vaccination | - | - | |||||||||
| Test | Erns 1 | E2 2 | NA 3 | Erns | E2 | NA | E2 | NA | E2 | NA | E2 | NA | |
| Jeju A | 1 | 0.00 | 2.35 | - 4 | 0.00 | 42.56 | 1/8 | 90.71 | 1/2048 | 89.21 | 1/512 | 83.40 | 1/128 |
| 2 | 0.00 | 3.84 | - | 0.00 | 30.38 | - | 88.85 | 1/512 | 73.14 | 1/128 | 60.51 | 1/32 | |
| 3 | 0.00 | 0.00 | - | * D | * D | * D | * D | * D | * D | * D | * D | * D | |
| Jeju B | 1 | 0.00 | 41.13 | - | 0.00 | 50.23 | 1/16 | 83.93 | 1/512 | 80.51 | 1/256 | 54.40 | 1/32 |
| 2 | 0.00 | 0.00 | - | 0.00 | 45.37 | 1/8 | 91.56 | 1/1024 | 92.96 | 1/1024 | 89.81 | 1/128 | |
| 3 | 0.00 | 1.38 | - | 0.00 | 47.72 | 1/8 | 94.43 | 1/1024 | 94.36 | 1/512 | 74.99 | 1/64 | |
| Jeju C | 1 | 0.04 | 0.00 | - | 0.00 | 67.77 | 1/32 | 91.82 | 1/1024 | 94.10 | 1/1024 | 93.80 | 1/512 |
| 2 | 0.00 | 11.10 | - | ** N/A | ** N/A | ** N/A | 92.01 | 1/2048 | 94.30 | 1/1024 | 92.20 | 1/256 | |
| 3 | 0.00 | 0.26 | - | ** N/A | ** N/A | ** N/A | 92.70 | 1/1024 | ** N/A | ** N/A | 94.65 | 1/512 | |
1 Erns S/P (sample compared with the positive control): Positive, S/P ≥ 0.5; suspect, 0.3 ≤ S/P < 0.5; negative, S/P < 0.3. 2 E2 PI (percent inhibition): Positive, PI ≥ 40; negative, PI < 40. 3 NA (neutralizing antibody): Positive, NA ≥ 1/32; negative, NA < 1/32. 4 Negative values are replaced with zero. * D, died. ** N/A, not available.