Questions on U.S. Beef Remain (New York Times) About 50 countries, including Korea, Taiwan and Japan, closed their doors to American beef after the first confirmed case mad cow disease was found in December 2003. [News Source]

Questions on U.S. Beef Remain (New York Times) About 50 countries, including Korea, Taiwan and Japan, closed their doors to American beef after the first confirmed case mad cow disease was found in December 2003. [News Source]