Meanwhile, final tests confirm that six pigs from the Minnesota state fair contracted the H1N1 flu, three more than initial research had indicated.The U.S. Agriculture Department says follow-up tests confirmed the presence of the H1N1 virus, in six samples taken as a part of a university research project at the Minnesota state fair.The tests confirm the first cases of pigs contracting swine flu in the U-S.The USDA has stressed that H1N1flu can't be contracted by eating pork products.