Table 2.

Results of ELISA I (IDEXX PRRS X3 Ab test) for detection of PRRSV antibodies (mean, standard deviation (s.d.), minimum, maximum S/P values)

S/P value		Mean	S.D.	Minimum	Maximum
Group 2	Positive	1.46	0.66	0.42	3.01
	Negative	0.13	0.13	0.00	0.37
Group 3		0.01	0.02	0.00	0.20
Group 4		0.06	0.07	0.00	0.39
Group 5	Negative	0.07	0.06	0.00	0.31
	Positive n = 2	-	-	0.64	2.22