Table 3 Origin of serum samples used in this study
Regions | No. farms | No. samples tested | No. positive | Positive rate (%) (95%CI) |
|---|---|---|---|---|
Chenzhou | 2 | 80 | 19 | 24 (14.2–33.3) |
Hengyang | 4 | 80 | 59 | 74 (63.9–83.6) |
Shaoyang | 3 | 214 | 107 | 50 (43.2–56.8) |
Yueyang | 2 | 90 | 76 | 84 (76.8–92.1) |
Changde | 1 | 263 | 149 | 57 (50.6–62.7) |
Yiyang | 3 | 183 | 72 | 39 (32.2–46.5) |
Loudi | 1 | 128 | 26 | 20 (13.2–27.4) |
Total | 16 | 1038 | 508 | 49 (45.9–52) |