Table 1.

The positive rate of PDCoV in clinical samples of diarrheal pigs in different periods and regions.

Period	Region	Samples	Positive	Positive rate (%)	Coinfection of PDCoV/PEDV	Positive ratea (%)	Reference
February–April, 2014	10 states in the USA (Minnesota, South Dakota, Nebraska, Illinois, Indiana, Michigan, Kentucky, Pennsylvania, Maryland and Ohio)	435	109	25	19	4.37	(18)
January–February, 2014	7 states in the USA (Ohio, Michigan, Illinois, Minnesota, Nebraska, South Dakota and Missouri) and Canada	293	89	30	29	9.90	(28)
November 2012–March 2015	Jiangxi, China	356	120	33.71	70	19.67	(20)
2004–2014	4 provinces in China (Anhui, Guangxi, Hubei and Jiangsu)	215	14	6.51	7	3.26	(25)
2012–2014, July–August 2015	3 provinces in China (Guangdong, Hainan and Guangxi)	390	5	1.28	5	1.28	(29)
January 2014–December 2016	South Korea	683	130	19.03	43	6.3	(10)
2015	Thailand, Vietnam, Lao PDR and Philippines	97	12	12.4	12	12.4	(21)
December 2015–June 2016	Guangdong, China	252	55	21.8	2	0.79	(30)
November 2013–August 2014	Japan	477	72	15.1	0	0	(11)
January 2016–May 2017	Taiwan, China	172	29	16.9	14	8.1	(31)
April 2015–March 2018	Henan, China	430	101	23.49	61	14.19	(32)
2012–2018	5 provinces in China (Jiangxi, Zhejiang, Fujian, Guangdong and Hunan)	2987	813	27.22	380	12.72	(33)
2014–2017	Mexico	885	85	9.6	46	5.2	(22)
2011–2016	Vietnam	108	11	10.19	11	10.19	(34)
March 2016–June 2018	18 provinces in China (Heilongjiang, Liaoning, Beijing, Hebei, Shanxi, Shandong, Henan, Jiangsu, Anhui, Hubei, Zhejiang, Jiangxi, Fujian, Hunan, Guangxi, Yunnan, Sichuan, Gansu)	719	94	13.07	34	4.73	(27)
January 2017–June 2019	Sichuan, China	634	84	13.25	47	7.41	(35)

^aPositive rate, Positive rate of PDCoV-PEDV coinfection.