Out of immediate danger, U.S. Sen. Edward M. Kennedy remained hospitalized as doctors worked to determine what caused one of the nation's best-known senators to suffer a seizure in his Cape Cod home, the Associated Press reported. Kennedy, 76, the lone surviving son in a famed political family, was flown Saturday morning to a Boston hospital after becoming ill and being treated at Cape Cod Hospital's emergency room. His physician said he did not suffer a stroke, as was first feared, and he recovered enough by Saturday afternoon to watch a baseball game on television. His wife, Vicki, his three children and his niece, Caroline Kennedy, among others, joined him at Massachusetts General Hospital. «Over the next couple of days, Senator Kennedy will undergo further evaluation to determine the cause of the seizure, and a course of treatment will be determined at that time,» said Dr. Larry Ronan, who added Kennedy was «not in any immediate danger.»