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PED-Positive Submissions: Increase in Positive Cases Count Accelerates

31 October 2013

US - The total number of swine accessions and diagnostic case submissions testing positive for the Porcine Epidemic Diarrhoea (PED) virus is now 924, according the latest figures reported by the American Association of Swine Veterinarians (AASV) from the USDA lab network dated 31 October.

By farm class, this figure for the total number of positive laboratory swine accessions/diagnostic case submissions breaks down as follows between the weeks of 15 April and 20 October: suckling, 193 (+26); nursery, 135 (+7); grower/finisher, 297 (+15); sows/boars, 151 (+15) and 117 (+5) unknown. The total is up 68 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, 233; Oklahoma, 199; North Carolina, 159; Kansas, 106; Minnesota, 57; Colorado, 29; Indiana, 27; Pennsylvania, 18 and Ohio, 16.

For the week of 13 to 12 October, North Carolina again accounts for the most new positive tests (22 out of the total of 68) with Iowa not far behind with 20 new positive results. Across all the states, most of the new positive findings (22) were in suckling piglets in the last week.

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 20 October, the total number of biological (swine) samples testing positive is 2,620, up from 2,342 the previous week (+280). The most-affected states are: North Carolina, 747; Oklahoma, 663; Kansas, 517; Iowa, 249; Minnesota, 136; Colorado, 82; Ohio, 71; Pennsylvania, 48 and Indiana, 29. Other states, where positive, reported 20 positives or fewer.

In the most recent week reported (week of 20 October), the following states reported one or more positive results: Colorado (1); Iowa (42), Illinois (2), Indiana (2), Kansas (35), Kentucky (1), Minnesota (27, North Carolina (105), Oklahoma (49) and Pennsylvania (1).

The total number of environmental samples testing positive for PEDv has been reported weekly since the week of 16 June. The total has reached 561, which is 32 more than the previous week's figure. The totals for each state are as follows (with the increase in brackets: Colorado, 14 (=); Iowa, 42 (+4); Kansas, 69 (+11); Minnesota, 186 (+8); Missouri, 1 (=); North Carolina, 20 (+1); Ohio, 11 (+2); Oklahoma 164 (+6); Pennsylvania, 2 (=); South Dakota, 1 (=); Virginia, 2 (=); unknown, 49(=).

These data are collated by USDA APHIS VS NVSL National Animal Health Laboratory Network (NAHLN).

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)

Further Reading

Find out more information on PED by clicking here.

ThePigSite News Desk

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