Table 2. Seroprevalence rate of PRV-gE among different pig herd types in Shandong province from 2015 to 2018.
| Years | Herds, No. (%) | PRV-gE | OR | 95% CI | ||||
|---|---|---|---|---|---|---|---|---|
| Piglets | Sows | Boars | Fatting pigs | Replacement pigs | ||||
| 2015 | 95/197 (48.2) | 505/1,109 (45.5) | 117/332 (35.2) | 47/123 (38.2) | 446/995 (44.8) | 1,210/2,756 (43.9) | 1 (ref.) | |
| 2016 | 929/1,387 (67.0) | 1,378/2,424 (56.8) | 212/442 (48.0) | 159/288 (55.2) | 231/492 (47.0) | 2,909/5,033 (57.8) | 1.750 | 1.592–1.922 |
| 2017 | 890/1,503 (59.2) | 1,194/2,534 (47.1) | 70/101 (69.3) | 92/225 (40.9) | 230/552 (41.7) | 2,476/4,915 (50.4) | 1.859 | 1.686–2.048 |
| 2018 | 767/1,202 (63.8) | 927/1,697 (54.6) | 69/171 (40.4) | 98/187 (52.4) | 211/496 (42.5) | 2,072/3,753 (55.2) | 1.575 | 1.426–1.739 |
| Total | 2,681/4,289 (62.5) | 4,004/7,764 (51.6) | 468/1,046 (44.7) | 396/823 (48.1) | 1,118/2,535 (44.1) | 8,667/16,457 (52.7) | ||
| OR | 1 (ref.) | 0.639 | 0.486 | 0.556 | 0.473 | |||
| 95% CI | 0.592–0.689 | 0.424–0.557 | 0.479–0.646 | 0.428–0.523 | ||||
PRV-gE = pseudorabies virus glycoprotein E; OR = odds ratio; CI = confidence interval.