Table 1.
Animal-level Toxoplasma gondii seroprevalence in breeding pigs in Estonia
| No. of pigs | No. of seropositive pigs | Seroprevalence (95% CI) | |
|---|---|---|---|
| Gendera | |||
| Sow | 213 | 20 | 9.4** (6.0–13.9) |
| Boar | 111 | 2 | 1.8** (0.3–5.8) |
| Breeda | |||
| Landrace/Large White | 106 | 8 | 7.5 (3.6–13.8) |
| Landrace | 98 | 10 | 10.2* (5.3–17.4) |
| Large White | 53 | 2 | 3.8 (0.6–11.9) |
| Otherb | 38 | 0 | 0.0* (0.0–7.6) |
| Age (year)a | |||
| < 1 | 72 | 2 | 2.8 (0.5–8.9) |
| ≥ 1 | 239 | 19 | 7.9 (5.0–11.9) |
| Herd size | |||
| < 2000 pigs | 170 | 6 | 3.5 (1.4–7.2) |
| ≥ 2000 pigs | 212 | 16 | 7.5 (4.5–11.7) |
| Location of the farm | |||
| Northern part of the country | 150 | 10 | 6.7 (3.4–11.6) |
| Southern part of the country | 232 | 12 | 5.2 (2.8–8.6) |
| Total | 382 | 22 | 5.8 (3.7–8.5) |
CI confidence interval, Mid-P exact
* Significantly different seroprevalence (P < 0.05)
** Significantly different seroprevalence (P < 0.01)
a Some information unknown for some animals
b The other breeds were pure Piétrain, pure Duroc, Duroc/Landrace, Piétrain/Duroc, Piétrain/Landrace, and Piétrain/Landrace/Large White