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)