Dr. Martin Salia, a surgeon who was diagnosed with Ebola in Sierra Leone and flown to Nebraska over the weekend for treatment, has died, hospital officials said Monday. Salia, 44, became the second person to die of the disease in the United States. Thomas Eric Duncan, who contracted Ebola in Liberia and traveled to Dallas, died last month. Salia landed Saturday in Omaha. He was the 10th patient to be treated on American soil and the third at Nebraska Medical Center. Hospital officials had said that he was perhaps sicker than any other patient flown to the United States from...