US - The number of pig farm samples that are confirmed positive for porcine epidemic diarrhoea virus (PEDV) in the last week was 31, three premises were confirmed with porcine deltacoronavirus (PDCoV) and one with the dual infection (PEDV and PDCoV).
For the latest week – 1 to 7 March – there were 31 new confirmed positive premises for PEDV and nine presumed positive, according to the latest report from USDA APHIS.
For the same period, three premises were confirmed positive for PDCoV but one was presumed positive, and there were also one confirmed dual infection (both PEDV and PDCoV) and one presumed positive.
The total numbers of premises with confirmed positive status for the current week are 985, 45 and 43 for PEDV, PDCoV and the dual infection, respectively.
Since 5 June, for PEDV, there have been 1,048 confirmed positive premises, 416 presumed positive and 52 previously positive premises that have attained negative status.
For PDCoV, the total for the same period are 51, 27 and five, respectively. For the dual infection, the totals are 45, 27 and two, respectively.
|Table 1. Number of swine enteric coronavirus disease (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||16 / 1||42 / 2||12 / 4||60 / 8||20 / 4||12 / 4|
|Jan-15||19 / 3||66 / 7||7 / 0||63 / 13||17 / 1||36 / 5|
|Feb-15||8 / 0||38 / 2||3 / 0||41 / 5||9 / 1||8 / 0|
|Total||131 / 48||299 / 59||51 / 25||346/ 110||193 / 93||124 / 135|
|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|
|Mar-15 to date||725||135||18.6||414||129||2.9|
|Total since Jun-14||28,406||3,534||12.4||14,036||355||2.5|
Location of Positive Premises
There are currently 34 states with at least one confirmed positive case of PEDV. Georgia reported its fist positive finding in the first week of March but it has not yet appeared in this APHIS report.
For the current week (1 March), there were 130 PEDV-positive laboratory accessions, bringing the total since 5 June 2014 to 3,527. Iowa reported 43 of these new cases, North Carolina 26 and Missouri 11.
Also reporting positive results in this most recent week were Illinois, Indiana, Kansas, Michigan, Minnesota, Nebraska, Ohio, Oklahoma, Pennsylvania, South Dakota, Texas, Utah, Wisconsin and "unknown".
There are currently 19 states with at least one confirmed positive case of PDCoV.
For the current week (1 March), there were 12 PDCoV-positive laboratory accessions, bringing the total since 5 June 2014 to 351. There were three positive premises in Illinois, two each in Iowa, Minnesota and North Carolina and one each in Michigan, Oklahoma and South Dakota.
Dual infection with PEDV and PDCoV
There are currently 14 states with one or more confirmed positive cases of the dual infection with both PEDV and PDCoV.
Most-affected states with the dual infection are Iowa and Minnesota, with 17 and nine confirmed positive results, respectively. APHIS has not updated the table giving the location of the new positive results this week.
Critical notes about these data are provided at the end of the original report.
ThePigSite News Desk