China has restricted imports of live pigs from the US amid worries over a fatal swine virus, The Wall Street Journal reported, citing the US Department of Agriculture (USDA) and livestock-industry officials. The news contributed to jitters on Friday in the US lean-hog futures market, which fell 2% to a one and half-week low. China, the world’s largest consumer of pork, has asked the USDA to conduct testing and provide certification that live hogs come from herds that are free of porcine epidemic diarrhea virus, an agency spokesman said.