Table 1.
Effect of treatment and time* on porcine epidemic diarrhea virus IgG ELISA sample-to-positive ratios (mean, SD) on oral fluid specimens.
| Specimen and treatment† | Day post-treatment | |||
|---|---|---|---|---|
| Day 0 | Day 2 | Day 4 | Day 6 | |
| Untreated oral fluid | ||||
| Negative | 0.0 (0.1) | 0.0 (0.1) | 0.0 (0.0) | 0.0 (0.0) |
| Positive | 1.4 (1.2) | 1.5 (1.3) | 1.4 (0.1) | 1.1 (0.9) |
| Oral fluid treatment A | ||||
| Negative | 0.0 (0.1) | 0.0 (0.1) | 0.0 (0.1) | 0.0 (0.1) |
| Positive | 1.0 (0.9) | 1.0 (1.0) | 1.1 (1.0) | 0.9 (1.1) |
| Oral fluid treatment B | ||||
| Negative | 0.0 (0.1) | 0.0 (0.1) | 0.0 (0.1) | 0.0 (0.1) |
| Positive | 1.2 (1.1) | 1.4 (1.3) | 1.3 (1.1) | 1.1 (0.8) |
| Oral fluid treatment C | ||||
| Negative | 0.0 (0.1) | 0.0 (0.1) | 0.0 (0.1) | 0.0 (0.1) |
| Positive | 1.0 (0.9) | 1.1 (1.0) | 1.0 (1.0) | 0.9 (0.9) |
| Serum (no treatment) | ||||
| Negative | 0.1 (0.2) | 0.1 (0.2) | 0.1 (0.2) | 0.1 (0.2) |
| Positive | 1.9 (0.5) | 1.8 (0.5) | 1.7 (0.5) | 2.2 (0.7) |
*
Samples held at 4°C.
†
Pairwise comparisons of IgG S/P ratios at 0 days post-treatment (DPT) versus 2, 4, and 6 DPT results detected no differences in IgG ELISA S/P ratios over time (p > 0.05).