Porcine Epidemic Diarrhea Virus (PEDV) Management

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Since it’s first confirmed case on May 17, 2013, Porcine Epidemic Diarrhea Virus (PEDv) as spread swiftly across 30 states. PEDv is a virus that primarily attacks the inner lining in the pig’s gut, thus causing severe diarrhea and vomiting, leading to a loss of growth and reproduction, in older pigs, and death in younger pigs. Research has shown that, if the pigs survive, they will develop immunity within 3-4 weeks after infection. However, how long this immunity lasts is still to be determined.

PEDv is spread through contact with infected manure and only a very small amount of the virus is required to infect the pig. An infected pig can shed PEDv anywhere from 21-30 days post infection, peaking around 5-6 days post infection; and, since PEDv likes cool, moist environments, PEDv can survive up to 30 days in slurry. Therefore, once on the farm, PEDv can stay for 2 months given the right conditions.

Good practices to kill PEDv, and preventing it from spreading, include disinfecting between groups, washing with water heated to 160 degrees Fahrenheit, and allowing for 24 hours of downtime before loading the room.

For more information about PEDv, current research on PEDv, and management practices to prevent PEDv, please go to www.pork.org/PED.