The US is planning measures to screen incoming air passengers for Ebola, President Barack Obama has said.
The likelihood of an Ebola outbreak in the US is «extremely low», Mr Obama said, but «we don’t have a lot of margin of error».
More than 3,400 people have died in West Africa in the world’s deadliest outbreak of the viral disease.
Mr Obama’s comments came six days after a Liberian man became the first case of Ebola diagnosed on American soil.
Thomas Eric Duncan, who contracted the disease in Liberia, is in a critical condition in a hospital isolation unit in Dallas.
Meanwhile, on Monday a plane carrying American journalist Ashoka Mukpo, who contracted Ebola while working in Liberia, landed in Nebraska, where he will undergo treatment for the deadly disease.