The United States, Canada and Mexico are coordinating efforts to prevent the arrival of a highly contagious swine disease that has swept through China’s hog herd and parts of Europe, U.S. Agriculture Secretary Sonny Perdue said on Thursday. The disease, African swine fever, can cause death for hogs in just two days. China, home to the world’s largest hog herd, has reported more than 100 cases of the disease in 27 provinces and regions since last …