Michael Yezzi raises 1,000 pigs a year in Shushan, N.Y. He's worried about how to keep his farm safe from a disease that has no proven cure. Abbie Fentress Swanson for NPR hide caption

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France has banned imports of live pigs and other products from the U.S. to keep out a virus that has killed more than 4 million pigs in the U.S. Here, young pigs look out of a pen at a North Dakota hog farm in a 2005 file photo. Will Kincaid/AP hide caption

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A screen grab from an undercover video released by the Humane Society of the U.S. shows a pig in a gestation crate at Iron Maiden Farms in Owensboro, Ky. Courtesy of The Humane Society of The United States hide caption

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Pitmaster Rodney Scott seasons a roasting hog behind a barbecue restaurant in Birmingham, Ala. Scott has been touring the South with a makeshift barbecue pit to raise money to rebuild his family's cookhouse after it burned down in November. Debbie Elliott/NPR hide caption

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Piglets at Hilldale Farm in State Center, Iowa in March 2013, just before porcine epidemic diarrhea began spreading through hog farms in the U.S. Amy Mayer/Harvest Public Media hide caption

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A traditional Danish pork roast, common for Christmas dinner in Denmark. Pork finds its way into most Danish meals. SNSK2010/via flickr hide caption

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Berkshire pigs on Happy Hula Farm, a member of the Eden Farms collective. Amy Mayer/Iowa Public Radio hide caption

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The antibiotic-free pigs roam freely on Niman Ranch in Iowa. Sarah Willis/courtesy Niman Ranch hide caption

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