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US Pig Farm Samples Positive for Porcine Delta Corona Virus: 359

US - Porcine Delta Corona virus (PDCoV) has been detected in 359 samples from pig farms in 16 states. California has reported its first virus-positive samples in this week's report.

4 August 2014

4 minute read

By: Jackie Linden

North America

For the latest weekly report - for the week of 26 July in a report dated 31 July from the USDA Animal Health Inspection Service and made available by the American Association of Swine Veterinarians (AASV) - five pig farms (termed "swine accessions") have tested positive for the PDCoV, bringing the cumulative total to 359.

The National Animal Health Laboratory Network (NAHLN) began collating testing data on PDCoV for the week of 30 March 2014. So far, 3,863 accessions have been tested, 303 in the most recent week reported, so the overall percentage found positive is 9.3 per cent.

With California reporting its first positive tests, the total number of states affected now stands at 16 (Table 1 and Figure 1).

Testing week	Total positive accessions	CA	IA	IL	IN	KS	MI	MN	MO	MT	NC	NE	OH	OK	PA	SD	TX	Un- known
Table 1. PDCoV summary by state
30-Mar	25	-	3	4	1	-	4	6	-	1	-	-	6	-	-	-	-	-
6-Apr	32	-	4	2	7	-	2	5	-	-	-	1	7	-	1	1	1	1
13-Apr	29	-	5	8	4	-	1	7	-	-	1	-	1	-	1	-	-	1
20-Apr	28	-	2	3	3	-	-	10	1	-	1	1	3	-	3	-	1	-
27-Apr	33	-	3	7	3	1	1	11	1	-	1	2	2	-	-	1	-	-
4-May	41	-	3	10	5	-	2	6	1	-	4	2	5	-	1	1	-	1
11-May	23	-	2	2	3	-	-	8	-	-	-	2	3	-	-	2	-	1
18-May	19	-	-	2	3	-	1	5	-	-	1	-	3	-	-	3	-	1
25-May	15	-	-	5	2	-	-	4	-	-	1	-	2	-	1	-	-	-
1-Jun	22	-	-	3	4	1	-	6	-	1	-	-	4	1	-	2	-	1
8-Jun	20	-	-	2	1	-	1	4	2	-	1	2	1	-	2	3	-	1
15-Jun	17	-	3	1	2	-	-	3	1	-	-	-	5	-	1	1	-	1
22-Jun	15	-	1	-	2	-	-	3	-	-	-	-	5	-	1	2	-	1
29-Jun	8	-	-	-	-	-	1	2	1	-	1	-	-	-	1	-	-	1
6-Jul	17	-	7	1	1	-	1	5	-	-	-	-	1	-	1	-	-	-
13-Jul	13	-	2	1	2	-	-	1	-	-	-	-	5	-	-	1	-	-
20-Jul	5	-	1	1	1	-	-	-	2	-	-	-	-	-	-	-	-	-
Total	359	2	38	52	42	2	14	85	7	2	11	9	52	1	13	17	2	10
*A single accession may include samples tested over more than one week; total accessions are calculated as the distinct number of accessions tested rather than the sum of accessions tested by week.

Figure 1. PDCoV-positive samples from biological accessions (pig farms)

PDCoV was previously known as Swine Delta Corona virus (SDCv). It is related and causes similar effects to the virus that causes Porcine Epidemic Diarrhoea (PED).

Critical notes about these data are provided at the end of the original report from AASV.