South Korean imports of U.S. pork and beef rose at a far faster pace than those of other overseas meat products this year following the outbreak of a contagious animal disease here, government data showed Sunday. Imports of U.S. pork spiked about 2.5-fold from a year ago to 82,569 tons in the January-May period, with overall pork imports rising 121 percent to 179,985 tons, according to the data by a government quarantine agency.