Table 1.

Number and percentages of CIEP positive and CIEP negative animals for each herd

		CIEP positive	CIEP negative
Herd	(n)	(%)	(%)
AMDV positive herds
A	100	92	8
B	100	93	7
C	100	86	14
D	50	84	16
Total	350	89	11
AMDV negative herd
E	25	0	100
Total	25	0	100