Table 1.

Summary of clinical signs and diagnostic data across the 3 groups of piglets from the swine bioassay

	Treatment group		(+) control group		(−) control group
Days on test	PCR	Clinical signs	PCR	Clinical signs	PCR	Clinical signs
0	Neg	Neg	Neg	Neg	Neg	Neg
1	Neg	Neg	Neg	Neg	Neg	Neg
2	Neg	Neg	19.98	Neg	Neg	Neg
3	Neg	Neg	16.32/18.84	Diarrhea	Neg	Neg
4	Neg	Neg	17.10	Diarrhea	Neg	Neg
5	Neg	Neg	16.07/15.70/16.58	V & D	Neg	Neg
6	Neg	Neg	22.13	V & D	Neg	Neg
7	Neg	Neg	21.20	Diarrhea	Neg	Neg
8	Neg	Neg	27.07	Neg	Neg	Neg
9	Neg	Neg	20.48	Neg	Neg	Neg
10	Neg	Neg	21.44	Neg	Neg	Neg
11	Neg	Neg	20.48	Neg	Neg	Neg
12	Neg	Neg	33.42	Neg	Neg	Neg
13	Neg	Neg	Neg	Neg	Neg	Neg
14	Neg	Neg	30.06	Neg	Neg	Neg
Necropsy	GI Negative	No lesions	GI positive 5/5 pigs	Lesions 5/5 pigs	GI Negative	No lesions

Treatment group: Pigs fed PEDV positive/liquid antimicrobial treated feed.

(+) control group: Pigs fed PEDV positive/saline treated feed.

(−) control group: Pigs fed PEDV negative/saline treated feed.

GI Negative: Small intestinal tracts negative by PCR & IHC.

GI positive: Small intestinal tracts positive by PCR & IHC.

Lesions: Histopathologic evidence of PEDV infection.

DPI: Days post-ingestion of feed.

V & D: vomiting & diarrhea.