BUFFALO, N.Y. (AP) — College students from West Africa may be subject to extra health checks when they arrive to study in the United States as administrators try to insulate campuses from the worst Ebola outbreak in history. With the virus continuing to kill in Guinea, Liberia, Sierra Leone and Nigeria, the expected arrival of thousands of students from those countries has U.S. authorities on alert but cautioning against alarm. While the Centers for Disease Control and Prevention have issued no specific recommendations for colleges, some state health departments, including in South Carolina and North Dakota, have spelled out for...