Table 3.

Results of clinical samples detected by the multiplex RT-PCR based on the DPO system

Year	One pathogen positive samples					Two pathogens positive samples					Three pathogens positive samples		Four pathogens positive samples
	SADS-CoV	PEDV	PDCoV	PRV-A	TGEV	SADS-CoV + PEDV	SADS-CoV + PDCoV	PEDV + PDCoV	PEDV + PRV-A	PDCoV + PRV-A	SADS-CoV + PEDV+ PDCoV	SADS-CoV + PEDV + PRV-A	SADS-CoV + PEDV + PDCoV + PRV-A
2016	2	10	5	4	0	5	1	7	3	1	2	0	1
2017	3	9	5	5	1	2	0	1	0	1	1	1	1
2018	1	9	2	0	0	0	0	4	0	0	0	0	0
Total	7 (3.87%)	28 (15.47%)	12 (6.63%)	9 (4.97%)	1 (0.55%)	7 (3.87%)	1 (0.55%)	12 (6.63%)	3 (1.66%)	2 (1.1%)	3 (1.66%)	1 (0.55%)	2 (1.1%)