US - The number of pig farm samples that are confirmed positive for porcine epidemic diarrhoea virus (PEDV) in the last week was 27, and two premises were confirmed with porcine deltacoronavirus (PDCoV) and one with the dual infection (PEDV and PDCoV). Virginia reported its first positive result in January 2015.
For the latest week – 18 to 24 January 2015 – there were 27 new confirmed positive premises for PEDV and two presumed positive, according to the latest report from USDA APHIS made available by the American Association of Swine Veterinarians (AASV).
For the same period, two premises were confirmed positive for PDCoV but none was presumed positive, and there was one confirmed dual infection (both PEDV and PDCoV) but no presumed positives.
The total numbers of premises with confirmed positive status for the current week are 724, 30 and 24 for PEDV, PDCoV and the dual infection, respectively.
Since 5 June, for PEDV, there have been 748 confirmed positive premises, 373 presumed positive and 21 previously positive premises that have attained negative status.
For PDCoV, the total for the same period are 35, 26 and six, respectively. For the dual infection, the totals are 24, 26 and one, respectively.
|Table 1. Number of SECD confirmed and presumptive positive premises
by month and production class
(includes PEDV, PDCoV and dual infections; confirmed/presumptive)
|Jun-14||18 / 11||30 / 16||15 / 8||22 / 28||47 / 45||14 / 52|
|Jul-14||25 / 12||36 / 8||6 / 5||20 / 13||33 / 12||15 / 33|
|Aug-14||15 / 8||17 / 6||2 / 5||25 / 10||10 / 6||10 / 22|
|Sep-14||17 / 3||21 / 5||2 / 2||30 / 8||31 / 7||6 / 14|
|Oct-14||2 / 4||24 / 5||2 / 0||33 / 15||6 / 2||11 / 8|
|Nov-14||6 / 1||15 / 3||1 / -||40 / 6||11 / 8||20 / 8|
|Dec-14||8 / 0||18 / 2||7 / 1||48 / 4||19 / 4||17 / 6|
|Jan-15||5 / 0||8 / 1||1 / 0||11 / 0||5 / 0||11 / 1|
|Total||97 / 41||171 / 50||37 / 21||240/ 86||167 / 85||95 / 142|
|Table 2. Biological accessions tested and number positive by month
(since 5 June 2014)
|Month||Tested||Positive||% positive||Tested||Positive||% positive|
|Total before 5 June 2014||21,128||6,976||33.0||2,172||260||12.0|
|Jan-15 to date||2,348||377||16.1||1,379||41||3.0|
|Total since Jun-14||23,960||2,815||11.7||11,366||291||2.6|
Location of Positive Premises
There are currently 34 states with at least one confirmed positive case of PEDV. Virginia reported its first positive result in the week of 11 January 2015.
For the current week (18 January), there were 134 PEDV-positive laboratory accessions, bringing the total since 5 June 2014 to 2,815. Iowa reported 46 of these new cases, North Carolina 19, Illinois, 17 and Minnesota 14.
Also reporting positive results in this most recent week were California, Colorado, Idaho, Indiana, Kansas, Kentucky, Missouri, Ohio, Oklahoma, Pennsylvania, Texas, Utah and Wyoming.
There are currently 17 states with at least one confirmed positive case of PDCoV.
For the current week (18 January), there were 17 PDCoV-positive laboratory accessions, bringing the total since 5 June 2014 to 289. There were four positive premises in Minnesota, three each in Iowa and Illinois, two each in Indiana and Michigan and one each in Idaho, North Carolina nd Oklahoma.
Dual infection with PEDV and PDCoV
There are currently 13 states with one or more confirmed positive cases of the dual infection with both PEDV and PDCoV.
Critical notes about these data are provided at the end of the original report.
ThePigSite News Desk
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