APTOPIX Mexico Swine FluA fast-spreading virus that can kill 80 percent of piglets that contract it is rapidly spreading across Missouri hog farms, wiping out entire nurseries in some cases. Porcine epidemic diarrhea has killed 4 million to 5 million pigs nationwide, or about 4 percent of the pigs that would go to market later this year, The Joplin Globe reported. “We had our first initial case in December in northern Missouri,” said Marcia Shannon, a swine nutrition specialist with the University of Missouri-Columbia. “Since then, there has been an explosion of it, especially in the first two weeks of February. I would consider it widespread now, especially north of Interstate 70.” About 3,000 farms in Missouri have pigs, she said, and any size farm is susceptible. Ron Plain, livestock. MORE