Table 2. Detection of HEV antibodies in swine sera in Hebei province, China.
Farm1 | Farm2 | Farm3 | Farm4 | Farm5 | Total | |
Sera number | 89 | 24 | 104 | 28 | 31 | 276 |
Positive number | 46 | 13 | 59 | 12 | 27 | 157 |
Positive percentage | 51.59% | 54.17 | 56.73% | 42.86% | 87.10% | 56.88% |
Note: Farm1, farm2, farm3 and farm4 are large farms in which pigs were fed with feeder; Farm1 and farm2 were in Shijianzhuang province, and farm3 and farm4 in Baoding province; farm5 was a family-size farm in which pigs were fed with swill.