Table 1.
Seroprevalence of Neospora caninum in Tibetan sheep from different regions, genders, seasons, ages, and pregnancies in Gansu and Tibet provinces, China, tested by competitive-inhibition enzyme-linked immunosorbent assay.
| Variable | Category | No. examined | Positive (%) | 95% CI | P-value | OR (95% CI) |
|---|---|---|---|---|---|---|
| Region | Luqu | 182 | 8 (4.4%) | 1.4-7.4 | >0.05 | Reference |
| Maqu | 588 | 48 (8.2%) | 5.9-10.4 | 1.9 (0.9-4.2) | ||
| Tianzhu | 962 | 90 (9.4%) | 7.5-11.2 | 2.3 (1.1-4.7) | ||
| Nyingchi | 455 | 38 (8.4%) | 5.8-10.9 | 1.9 (0.9-4.3) | ||
| Sex | Male | 638 | 69 (10.8%) | 8.4-13.2 | <0.01 | 1.5 (1.1-2.1) |
| Female | 1549 | 115 (7.4%) | 6.1-8.7 | Reference | ||
| Season | Spring | 480 | 41 (8.5%) | 6.2-11.1 | >0.05 | 1.4 (0.8-2.2) |
| Summer | 398 | 45 (11.3%) | 8.2-14.4 | 1.8 (1.1-2.9) | ||
| Autumn | 479 | 31 (6.5%) | 4.3-8.7 | Reference | ||
| Winter | 375 | 29 (7.7%) | 5.0-10.4 | 1.2 (0.7-2.1) | ||
| No data | 455 | 38 (8.4%) | 5.8-10.9 | 1.3 (0.8-2.1) | ||
| Age (year∗) | 0-1 | 447 | 45 (10.1%) | 7.3-12.9 | >0.05 | 1.9 (1.1-3.8) |
| ≥1-2 | 413 | 27 (6.5%) | 4.2-8.9 | 1.2 (0.6-2.5) | ||
| ≥2-3 | 243 | 13 (5.4%) | 2.5-8.2 | Reference | ||
| ≥3 | 1084 | 99 (9.1%) | 7.4-10.9 | 1.8 (0.9-3.2) | ||
| Pregnancy | Not pregnant | 581 | 49 (8.4%) | 6.2-10.7 | >0.05 | 1.2 (0.8-1.7) |
| Pregnant | 796 | 59 (7.4%) | 5.6-9.2 | Reference | ||
| No data | 810 | 76 (9.4%) | 7.4-11.4 | 1.3 (0.9-1.9) | ||
| Total | 2187 | 184 (8.4%) | 7.3-9.6 |
95% CI, 95% confidence interval; OR, odds ratio.
∗Animals are grouped by age of year.