US - The number of pig farm samples that are confirmed positive for porcine epidemic diarrhoea virus (PEDV) in the last week was 63, and two premises were confirmed with porcine deltacoronavirus (PDCoV) and one with the dual infection (PEDV and PDCoV).
For the latest week – 25 to 31 January 2015 – there were 63 new confirmed positive premises for PEDV and nine presumed positive, according to the latest report from USDA APHIS.
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 786, 32 and 25 for PEDV, PDCoV and the dual infection, respectively.
Since 5 June, for PEDV, there have been 809 confirmed positive premises, 381 presumed positive and 21 previously positive premises that have attained negative status.
For PDCoV, the total for the same period are 37, 26 and five, respectively. For the dual infection, the totals are 25, 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||12 / 0||28 / 2||10 / 3||59 / 5||19 / 4||11 / 3|
|Jan-15||10 / 1||26 / 3||2 / 0||24 / 2||6 / 0||9 / 3|
|Total||106 / 42||201 / 53||41 / 23||265/ 92||173 / 90||85 / 133|
|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|
|Total since Jun-14||24,698||2,936||11.9||11,831||294||2.5|
Location of Positive Premises
There are currently 34 states with at least one confirmed positive case of PEDV. Most recent was Virginia, which reported its first positive result in January 2015.
For the current week (25 January), there were 116 PEDV-positive laboratory accessions, bringing the total since 5 June 2014 to 2,936. Iowa reported 40 of these new cases, North Carolina 18 and Illinois, 17.
Also reporting positive results in this most recent week were California, Colorado, Idaho, Indiana, Kansas, Michigan, Minnesota, Missouri, Nebraska, Ohio, Oklahoma, Texas, Wyoming and "unknown".
There are currently 17 states with at least one confirmed positive case of PDCoV.
For the current week (25 January), there were three PDCoV-positive laboratory accessions, bringing the total since 5 June 2014 to 294. There was one positive premises in each of Iowa, Illinois and Nebraska.
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