Table 7 Number (proportion; 95% CI) of ELISA positive cows in each fPCR category from 3 years (2013–2016) of whole herd testing on a NZ pastoral dairy farm for Mycobacterium avium subsp. paratuberculosis infection using 4 ELISA tests conducted in parallel
fPCR status | Lactation year | ||
|---|---|---|---|
2013–2014 | 2014–2015 | 2015–2016 | |
Not Detected | 240 (80.1%; 76.3–85.3) | 82 (75.9%; 67.8–84.0) | 38 (76.0%; 64.2–87.8) |
Moderate | 29 (9.8%; 6.4–13.1) | 9 (8.3%; 3.1–13.5) | 7 (14.0%; 4.4–23.6) |
High | 28 (9.4%; 6.1–12.8) | 17 (15.7%; 8.9–22.6) | 5 (10%; 1.7–18.3) |