Earlier this month I participated in the Leman Swine Health Conference sponsored by the University of Minnesota. The obvious topic of discussion in the hallway and even for some of the sessions was the PED virus and its impact on the U.S. production system.
The diagnostic laboratories have made rapid progress on tools to help us understand the disease. However, the methods of transmission between sites is still not known in many cases.
One obvious method of transmission that has been confirmed is the unloading areas of slaughter plants. A Pork Board sponsored study this summer demonstrated the likely hood of a trailer entering the plant with a negative status for detection of the virus in the manure on the floor of the trailer becoming positive during the unloading process.