PED-Positive Submissions: Count Continues Upwards

US - The total number of swine accessions and diagnostic case submissions testing positive for the Porcine Epidemic Diarrhoea (PED) virus is now 828, according the latest figures reported by the American Association of Swine Veterinarians (AASV) from the USDA lab network dated 24 October.
calendar icon 29 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 13 October: suckling, 167 (+22); nursery, 128 (+12); grower/finisher, 282 (+15); sows/boars, 136 (+2) and 112 (+8) unknown. The total is up 59 from a week ago.

No new states reported a positive result for the first time in the last week and so the total affected now stands at 18. Those states with 10 or more positive tests are: Iowa, 213; Oklahoma, 190; North Carolina, 137; Kansas, 97; Minnesota, 55; Colorado, 28; Indiana, 26; Pennsylvania, 17 and Ohio, 16.

For the week of 6 to 13 October, North Carolina again accounts for the most new positive tests (21 out of the total of 59) but there is no clear development in terms of pig age affected there or in other states.

In mid-June, the reporting system was adjusted. For the weeks prior to 16 June, laboratories were able to provide diagnostic case submissions as well 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 13 October, the total number of swine samples testing positive is 2,342, up from 2,145 the previous week (+243). The most-affected states are: North Carolina, 642; Oklahoma, 615; Kansas, 482; Iowa, 207; Minnesota, 109; Colorado, 81; Ohio, 71 and Indiana, 27. Some of the figures for the previous week appear to have been adjusted from the previous week. Other states, where positive, reported 20 positives or fewer.

In the most recent week reported (week of 13 October), the following states reported one or more positive results: Iowa (15), Illinois (1), Kansas (27), Kentucky (2), Minnesota (25), North Carolina (81), Oklahoma (64) and Pennsylvania (28).

The total number of environmental samples testing positive for PEDv has been reported weekly since the week of 16 June. The total has reached 529, which is 29 more than the previous week's figure. The totals for each state are as follows (with the increase in brackets: Colorado, 14 (=); Iowa, 38 (=); Kansas, 58 (+1); Minnesota, 178 (+23); Missouri, 1 (=); North Carolina, 19 (+4); Ohio, 9 (=); Oklahoma 158 (+1); Pennsylvania, 2 (=); South Dakota, 1 (=); Virginia, 2 (=); unknown, 49(=).

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: Due to the Federal shut-down, the National Animal Health Laboratory Network (NAHLN) report was suspended for the weeks of 22 September to 13 October 2013. However, the University of Minnesota Diagnostic Laboratory collected and reported PEDv testing data during that timeframe. This report includes data from that period in order to be as comprehensive as possible.

Further Reading

Find out more information on PED by clicking here.

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