Table 3.

Prevalence of infectious agents found in 37 healthy foals and 51 foals with gastrointestinal (GI) disease in central Kentucky. All infectious agents were detected with equine specific real‐time PCR tests; Salmonella was also identified by culture. Odds ratio were calculated based on contingency tables and exact P values calculated using Fisher's exact test

	Real‐time PCR tests										Culture
	Equine rotavirus	Equine coronavirus	C. difficile toxin A	C. difficile toxin B	Neorickettsia risticii	C. perfringens alpha toxin	Lawsonia intracellularis	Rhodococcus equi	Cryptosporidium spp.	Salmonella spp.	Salmonella spp. culture
Healthy foals	3%	27%	0%	0%	0%	0%	0%	14%	11%	0%	0%
GI‐diseased foals	35%	29%	6%	6%	4%	6%	0%	8%	27%	14%	8%
Odds ratio	19.6	1.1	5.4	5.4	7.9	5.4	‐	0.5	3.1	12.6	8.9
P	0.0048	0.80	0.27	0.27	0.17	0.27	‐	0.39	0.1	0.09	0.14

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