Smithfield, the largest pork processing plant in the U.S., announced that it has decided to run its Tar Heel, NC facility only four days a week and suggested it may also reduce production at its Clinton, NC plant due to the impact of PEDv. PEDv Udate The porcine epidemic diarrhea virus (PEDv) is spreading. According to the National Animal Health Laboratory Network, there were 300 new cases last week, bringing the total to 4,757. A case can range from a single pig to an entire herd at one site. The virus was first discovered in May 2013, and there have been an estimated 4-5 million pigs lost to it since then, roughly 4 percent of the annual slaughter. Rabobank reports that about 60 percent of the U.S. herd and 28 percent of the Mexican her...