PED-Positive Submissions: Sharp Increase in North Carolina's Breeding Herd

US - The total number of swine accessions and diagnostic case submissions testing positive for the Porcine Epidemic Diarrhoea (PED) virus is now 684, according the latest figures reported by the American Association of Swine Veterinarians (AASV) from the USDA lab network dated 2 October.
calendar icon 3 October 2013
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By farm class, this figure for the total number of swine accessions/diagnostic case submissions breaks down as follows between the weeks of 15 April and 22 September: suckling, 123; nursery, 94; grower/finisher, 246; sows/boars, 122 and 94 unknown. The total is up 40 from a week ago.

Once again, no new states reported a positive result in the last week and so the total affected remains at 17. Those states with 10 or more positive tests are: Iowa, 191; Oklahoma, 164; Kansas, 85; North Carolina, 76; Minnesota, 46; Indiana, 26; Colorado, 25, Ohio, 16 and Pennsylvania, 13. Of these states, North Carolina again reported the highest number of new positive results at 24.

For the week 22 to 29 September, it is interesting to note that Kansas accounts for the great majority of new positive tests from suckling piglets (18 out of a total of 22), while North Carolina reported 57 of the 58 positive tests among sows and boars.

In mid-June, the reporting system was adjusted. For the weeks prior to 16 June, laboratories were able to provide diagnostic case submissions as wel as the number of premises testing positive for PEDv. Since 16 June, the data refer only to diagnostic cases submissions ('swine accessions').

From the week of 16 June to week of 22 September, the total number of swine samples testing positive is 1,750, up from 1,594 the previous week (+156). The most-affected states are: Oklahoma, 502; Kansas, 426; North Carolina, 366; Iowa, 164; Colorado, 74; Ohio, 71; Minnesota, 65 and Indiana, 26. Other states, where positive, reported 20 positives or fewer.

In the most recent week reported (week of 22 September), the following states reported one or more positive results: Colorado (1), Iowa (3), Illinois (1), Kansas (20), Minnesota (5), North Carolina (114) and Oklahoma (4).

The total number of environmental samples testing positive for PEDv has been reported weekly since the week of 16 June. The total has reached 363 - three more than the previous week's figure. The totals for each state are as follows (with the increase in brackets: Colorado, 12 (+2); Iowa, 35 (=); Kansas, 47 (+1); Minnesota, 54 (=); North Carolina, 2 (=); Ohio, 6 (=); Oklahoma 154 (=); Pennsylvania, 1 (=); South Dakota, 1 (=); Virginia, 2 (=).

Total number of swine samples testing positive for PEDv per week from each State.
(Laboratories began reporting number of samples the week of 16 June 2013)

Cumulative number of swine samples testing positive for PEDv from each State.
(Laboratories began reporting number of samples the week of 16 June 2013)

Note: As a result of the US government shutdown, the National Animal Health Laboratory Network was unable to coordinate the PEDv case information this week. In the interest of maintaining the reporting, the Veterinary Diagnostic Lab at the University of Minnesota agreed to compile the information this week and the diagnostic labs at ISU, KSU and SDSU supported this effort by providing their case accession information to Minnesota for publication. AASV thanks all the labs that pulled together to make this happen.

Further Reading

Find out more information on PED by clicking here.

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