An American patient treated for Ebola in Nebraska then released is now in isolation in a hospital in Massachusetts. And an Ebola patient in Dallas has slipped into critical condition. Dr. Richard Sacra, who had been previously treated for Ebola, went to an emergency room early Saturday in Boston with a cough and fever, said missionary organization Serving in Mission. He was afraid he might have pneumonia. Doctors there don't believe his symptoms point to a recurrence of Ebola, but instead a respiratory infection. But they are keeping Sacra in isolation, in accordance with guidelines from the Centers for Disease...