New worldwide concerns as nurse in Spain gets Ebola

Raising fresh concern around the world, a nurse in Spain on Monday became the first person known to catch Ebola outside the outbreak zone in West Africa. In the U.S., President Barack Obama said the government was considering ordering more careful screening of airline passengers arriving from the region. In dealing with potential Ebola cases, Obama said, ‘we don’t have a lot of margin for error.’Already hospitalized in the U.S., a critically ill Liberian man, Thomas Duncan, began receiving an experimental drug in Dallas. But there were encouraging signs for an American video journalist who returned from Liberia for treatment. Ashoka Mukpo, 33, was able to walk off the plane before being loaded on a stretcher and taken to an ambulance, and his father said his symptoms of fever and nausea appeared mild. ‘It was wonderful to see his face,’ said Dr. Mitchell Levy, who talked to his son on video chat.