Iowa State University has announced that a new strain of the Porcine Epidemic Diarrhea virus (PEDv) has been discovered in samples taken from Illinois and Missouri. PEDv Cases Growing; New Strain Found Iowa State University has announced that a new strain of the Porcine Epidemic Diarrhea virus (PEDv) has been discovered in samples taken from Illinois and Missouri. There is not a consensus on whether this is a mutant strain or a new one that was introduced separately. PEDv has been found in 23 U.S. states and was discovered in Canada last week. The virus does not transmit to humans nor does it have a major effect on hogs. However, it is about 75 percent fatal in piglets. The American Association of Swine Veterinarians reports that there we...