1 | Page Swine Enteric Coronavirus Disease (SECD) Situation Report – Mar 8, 2018 Information current as of 12:00 pm MDT, 03/07/2018 This report provides information on confirmed SECD-infected premises and SECD laboratory testing results data reported to USDA since the Federal Order was initiated on June 5, 2014. USDA–APHIS–VS veterinary officials confirm SECD-infected premises according to the official case definition. These reports are available on the USDA Web site at www.aphis.usda.gov/animal-health/secd. The Web site provides additional SECD information, including reports on SECD laboratory testing prior to the Federal Order. SECD Positive Premises Table 1. SECD Positive Premises This Week and Cumulative since June 5, 2014 NEW THIS WEEK (FEB 25 – MAR 3, 2018) PEDV PDCOV DUAL INFECTION a New Confirmed Positive Premises This Week 8 5 1 New Presumptive Positive Premises This Week 1 3 0 CURRENT PREMISES WITH SECD POSITIVE STATUS Total Premises with Confirmed Positive Status This Week 2,892 245 307 CUMULATIVE SINCE JUNE 5, 2014 b Confirmed Positive Premises 3,561 300 320 Presumptive Positive Premises 702 88 47 Confirmed Positive Premises that have Attained Negative Status (i.e., premises that changed from positive to negative status) c 513 20 10 a Dual infection indicates premises with both PEDV and PDCoV. b Cumulative data include current premises with positive status and premises that were positive but have acquired negative status. c See Notes section of this report for details about premises statuses. Animal and Plant Health Inspection Service Veterinary Services
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Swine Enteric Coronavirus Disease
(SECD) Situation Report – Mar 8, 2018 Information current as of 12:00 pm MDT, 03/07/2018
This report provides information on confirmed SECD-infected premises and SECD laboratory testing results data
reported to USDA since the Federal Order was initiated on June 5, 2014. USDA–APHIS–VS veterinary officials
confirm SECD-infected premises according to the official case definition. These reports are available on the
USDA Web site at www.aphis.usda.gov/animal-health/secd. The Web site provides additional SECD information,
including reports on SECD laboratory testing prior to the Federal Order.
SECD Positive Premises Table 1. SECD Positive Premises This Week and Cumulative since June 5, 2014
NEW THIS WEEK (FEB 25 – MAR 3, 2018) PEDV PDCOV DUAL INFECTIONa
New Confirmed Positive Premises This Week 8 5 1
New Presumptive Positive Premises This Week 1 3 0
CURRENT PREMISES WITH SECD POSITIVE STATUS
Total Premises with Confirmed Positive Status This Week 2,892 245 307
CUMULATIVE SINCE JUNE 5, 2014b
Confirmed Positive Premises 3,561 300 320
Presumptive Positive Premises 702 88 47
Confirmed Positive Premises that have Attained Negative Status (i.e., premises that changed from positive to negative status) c
513 20 10
aDual infection indicates premises with both PEDV and PDCoV. bCumulative data include current premises with positive status and premises that were positive but have acquired negative status. cSee Notes section of this report for details about premises statuses.
Animal and Plant Health Inspection Service Veterinary Services
Figure 1. Number of Confirmed Positive Premises by Week a
aWeek the sample was received at the laboratory for testing.
Figure 2. Number of Presumptive Positive Premises by Week a
aWeek the sample was received at the laboratory for testing.
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Map 1. PEDV: Cumulative Confirmed and Presumptive PEDV Positive Premises since June 5, 2014
Table 2. PEDV: Number of New SECD Confirmed and Presumptive Positive Premises in Each Production Class, by Weeka and State (confirmed / presumptive)
WEEK STATE TOTAL NURSERY WEAN TO
FINISH FARROW TO
FINISH FINISHER SOW/BREEDING UNKNOWN
11/19/17 WI 1 / 0 1 / 0
11/26/17 IL 1 / 0 1 / 0
01/14/18 OH 1 / 0 1 / 0
01/21/18 MN 1 / 0 1 / 0
02/04/18 OH 1 / 0 1 / 0
02/11/18 IN 1 / 0 1 / 0
02/11/18 MN 1 / 0 1 / 0
02/18/18 IL 0 / 1 0 / 1
02/25/18 IL 1 / 0 1 / 0
TOTAL 8 / 1 1 / 0 2 / 1 1 / 0 2 / 0 1 / 0 1 / 0 aWeek sample was received at the laboratory for testing
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Map 2. PDCoV: Cumulative Confirmed and Presumptive PDCoV Positive Premises since June 5, 2014
Table 3. PDCoV: Number of New SECD Confirmed and Presumptive Positive Premises in Each Production Class, by Weeka and State (confirmed / presumptive)
WEEK STATE TOTAL NURSERY WEAN TO
FINISH FARROW TO
FINISH FINISHER SOW/BREEDING UNKNOWN
01/21/18 OH 1 / 0 1 / 0
01/28/18 IL 1 / 0 1 / 0
02/11/18 IL 1 / 0 1 / 0
02/11/18 OH 1 / 0 1 / 0
02/11/18 WI 0 / 1 0 / 1
02/18/18 MN 1 / 0 1 / 0
02/18/18 WI 0 / 2 0 / 2
TOTAL 5 / 3 0 / 0 0 / 0 2 / 3 0 / 0 0 / 0 3 / 0 aWeek sample was received at the laboratory for testing
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Map 3. Dual Infection: Cumulative Confirmed and Presumptive Positive Premises with Both PEDV and PDCOV
since June 5, 2014
Table 4. Dual Infection: Number of New SECD Confirmed and Presumptive Positive Premises in Each Production Class, by Weeka and State (confirmed / presumptive)
WEEK STATE TOTAL NURSERY WEAN TO
FINISH FARROW TO
FINISH FINISHER SOW/BREEDING UNKNOWN
02/11/18 OH 1 / 0 1 / 0
TOTAL 1 / 0 0 / 0 0 / 0 0 / 0 1 / 0 0 / 0 0 / 0 aWeek sample was received at the laboratory for testing
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Table 5. Number of SECD Confirmed and Presumptive Positive Premises in Each Production Class, by Montha (includes PEDV, PDCoV, and Dual Infections) (confirmed / presumptive)
Table 5. Number of SECD Confirmed and Presumptive Positive Premises in Each Production Class, by Montha (includes PEDV, PDCoV, and Dual Infections) (confirmed / presumptive)
14 1 / 0 3 / 4 30 / 5 17 / 0 12 / 2 18 / 1 15 / 4 1 / 0 0 / 2 3 / 0 1 / 0 0 / 1 aWeek sample was received at the laboratory for testing; weeks are not shown if there were no confirmed or presumptive positive premises for that week.
SECD Laboratory Testing
Table 9. Biological Laboratory Accessions This Week and Cumulative since June 5, 2014
NEW THIS WEEK (FEB 25 – MAR 3, 2018) PEDV PDCOV
Positive Accessions 115 43
Accessions Tested 655 623
Percent Positive 17.6% 6.9%
No. of NAHLN Labs Reporting 6
CUMULATIVE SINCE JUNE 5, 2014 PEDV PDCOV
Positive Accessions 14,348 1,844
Accessions Tested 123,264 89,962
Percent Positive 11.6% 2.0%
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Table 10. Biological Accessions Tested and Number Positive by Month PEDV PDCoVb
Monthc, d Testeda Positive % Pos Tested Positive % Pos
Before the Federal Order (FO)
Apr 2013 - 3 - - - -
May 2013 - 112 - - - -
Jun 2013 - 187 - - - -
Jul 2013 - 113 - - - -
Aug 2013 - 138 - - - -
Sep 2013 - 134 - - - -
Oct 2013 - 267 - - - -
Nov 2013 1,064 414 38.90% - - -
Dec 2013 2,294 630 27.50% - - -
Jan 2014 2,774 953 34.40% - - -
Feb 2014 3,650 1,228 33.60% - - -
Mar 2014c 3,601 1,123 31.20% 45 7 15.60%
Apr 2014 3,775 1,053 27.90% 947 124 13.10%
May 2014 3,590 757 21.10% 1,042 112 10.70%
Jun 2014 (through 6/4/14) 489 84 17.20% 140 15 10.70%
Total Before FO 21,128 6,976 33.00% 2,172 260 12.00%
After the Federal Order (starting 6/5/2014)
FY 2014 (Partial Year)
Jun 2014 2,867 431 15.0% 832 86 10.3%
Jul 2014 3,555 410 11.5% 1,196 47 3.9%
Aug 2014 3,095 312 10.1% 1,193 18 1.5%
Sep 2014 3,144 261 8.3% 1,338 10 0.7%
FY14 Total 12,647 1,411 11.2% 4,558 161 3.5%
FY 2015
Oct 2014 3,307 300 9.1% 1,901 19 1.0%
Nov 2014 2,507 303 12.1% 1,555 30 1.9%
Dec 2014 3,239 446 13.8% 1,983 50 2.5%
Jan 2015 3,107 508 16.4% 1,876 47 2.5%
Feb 2015 2,990 463 15.5% 1,806 49 2.7%
Mar 2015 3,308 597 18.0% 1,903 59 3.1%
Apr 2015 3,051 454 14.9% 1,814 31 1.7%
May 2015 2,765 303 11.0% 1,653 28 1.7%
Jun 2015 2,844 234 8.2% 1,747 22 1.3%
Jul 2015 2,839 226 8.0% 1,773 13 0.7%
Aug 2015 2,463 154 6.3% 1,511 11 0.7%
Sep 2015 2,669 196 7.3% 1,647 12 0.7%
FY15 Total 35,089 4,184 11.9% 21,169 371 1.8%
FY 2016
Oct 2015 2,709 262 9.7% 1,712 11 0.6%
Nov 2015 2,428 269 11.1% 1,580 15 0.9%
Dec 2015 2,989 456 15.3% 1,783 39 2.2%
Jan 2016 2,932 496 16.9% 1,928 107 5.5%
Feb 2016 2,940 513 17.4% 1,952 69 3.5%
Mar 2016 3,145 423 13.4% 2,088 68 3.3%
Apr 2016 2,888 380 13.2% 1,901 53 2.8%
May 2016 2,548 285 11.2% 2,299 41 1.8%
Jun 2016 2,608 230 8.8% 2,464 27 1.1%
Jul 2016 2,281 131 5.7% 2,124 11 0.5%
Aug 2016 2,551 160 6.3% 2,381 16 0.7%
Sep 2016 2,325 143 6.2% 2,201 20 0.9%
FY16 Total 32,345 3,748 11.6% 24,413 477 2.0%
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Table 10. Biological Accessions Tested and Number Positive by Month PEDV PDCoVb
Total After FO 123,264 14,348 11.6% 89,962 1,844 2.0%
Grand Total 144,392 21,324 14.8% 92,134 2,104 2.3% aFrom April through October 2013, number of cases tested was not reported and calculation of Percent Positive was not possible. bNAHLN laboratories started sharing PDCoV testing results with VS on March 23, 2014.
cPre-FO data: Month refers to the month the sample was tested; after the FO, month refers to the month the laboratory received the sample for testing. dSamples in individual laboratory accession may be tested in subsequent months (e.g., start and end of the month), causing an individual accession to be counted in 2 months.
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Figure 3. PEDV: Biological Accessions Tested and Number Positive by Weeka
Figure 4. PDCoV: Biological Accessions Tested and Number Positive by Weeka
aWeek the sample was received at the laboratory for testing.
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Table 11. PEDV Positive Laboratory Accessions by Weeka and Stateb
WEEK
TOTAL POS. ACCS. AL AZ CA CO FL GA HI IA ID IL IN KS KY MA MD MI MN MO MT NC ND NE NH NM NV NY OH OK OR PA PR SC SD TN TX UT VA WI WY UNK
aWeek the sample was received at the laboratory for testing; weeks are not listed if there were no positive accessions for that week.
bFor SECD laboratory testing data, the State is the collection site State that was reported by the laboratory to USDA. cSamples in an individual laboratory accession may be tested in subsequent weeks (at the start and end of the week), causing an individual accession to be counted in 2 weeks.
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Table 12. PDCoV Positive Laboratory Accessions by Weeka and Stateb
WEEK TESTED
TOTAL POS. ACCS. CA IA ID IL IN KS KY MI MN MO MT NC NE OH OK PA SD TX WA WI WY UNK
aWeek the sample was received at the laboratory for testing; weeks are not listed if there were no positive accessions for that week. bFor SECD laboratory testing data, the State is the collection site State that was reported by the laboratory to USDA.
cSamples in an individual laboratory accession may be tested in subsequent weeks (at the start and end of the week), causing an individual accession to be counted in two weeks.
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Notes About Data Used in This Report This report is posted on the USDA SECD Web site (www.aphis.usda.gov/animal-health/secd). This Web site also
provides information on SECD laboratory testing prior to the Federal Order (April 2013–June 2014), and information on SECD reporting, case definitions, herd plans, vaccines, and the Federal response.
Dual infection indicates a premises that is positive for both PEDV and PDCoV.
Premises statuses are assigned in accordance with the Novel Swine Enteric Coronavirus Disease Case Definition (available online at www.aphis.usda.gov/animal-health/secd). A confirmed positive premises is a premises where pigs tested positive and have clinical signs. A presumptive positive premises is a premises where pigs tested positive but have nonspecific, unknown, or no clinical signs consistent with SECD. Please see the official SECD Case Definition for more information (www.aphis.usda.gov/animal-health/secd).
Some positive premises may have a change in their type of positive status over time. For example, with the onset of clinical signs, a presumptive positive premises may be reclassified to a confirmed positive premises. Or PEDV positive premises may be reclassified to a dual infection status with the laboratory diagnosis of PDCoV. Therefore, the number of cumulative positive statuses will be slightly more than the sum of the number of current positive statuses and positive statuses reclassified as negative (see Table 1).
Table 1 describes premises that are confirmed “this week”; this refers to premises that were investigated and determined to be presumptive or confirmed according to SECD case definition criteria during the current report week. Data presented in Tables 2-8 and Figures 1-2 provide epidemiologic trends, and data are presented based on the week the specimen was received by the testing laboratory.
In general, a laboratory accession is a set of samples collected at a single premises on a single day and submitted to the laboratory. A single herd or premises may be tested multiple times, and the same herd or premises may be represented in a large number of laboratory accessions. Because a single premises may repeatedly be represented in subsequent lab accessions, fluctuations in the lab accession data in this report do not accurately depict epidemiologic trends. The numbers of confirmed or presumptive positive premises provided in the first section of this report are better epidemiologic indicators.
Laboratory accession data in this report include only PCR results from testing on biological samples; testing on environmental or feed samples is not included.
In the laboratory accession section of this report, State is the Collection State reported by the testing laboratory to USDA; State of origin data provided by laboratories is not verified by USDA. However, USDA staff verifies the locations of premises associated with positive laboratory accessions and they are reported in the premises section of this report.
NAHLN laboratories that have reported SECD testing data to the USDA–APHIS–VS since June 5, 2014, include: Arkansas Livestock & Poultry Commission Laboratory; University of Georgia, Athens; University of Illinois Veterinary Diagnostic Laboratory; Illinois Department of Agriculture, Galesburg Animal Disease Laboratory; Iowa State University Veterinary Diagnostic Laboratory; Kansas State Veterinary Diagnostic Laboratory; Michigan State University Diagnostic Center for Population and Animal Health; University of Minnesota Veterinary Diagnostic Laboratory; Missouri Department of Agriculture Veterinary Diagnostic Laboratory; University of Nebraska Veterinary Diagnostic Center; Rollins Diagnostic Laboratory, North Carolina Department of Agriculture; North Dakota State University Veterinary Diagnostic Laboratory; Ohio Animal Disease Diagnostic Laboratory–Ohio Department of Agriculture; Oregon State University Veterinary Diagnostic Laboratory; Indiana Animal Disease Diagnostic Laboratory at Purdue University; Animal Disease Research & Diagnostic Laboratory–South Dakota State University; and Texas Veterinary Medical Diagnostic Laboratory. Data in this report do not include testing data from private diagnostic laboratories or testing data for research projects.
Data summaries provided in this report reflect the most current and complete data available at the time of report preparation; summaries in this report may differ from those provided in past reports.
