Missionaries and other Americans who have worked with Ebola victims in Africa will be forced to spend three weeks in quarantine when they return to the United States.
Health officials said the move was a precaution against the spread of the deadly viral disease, which has struck Guinea, Sierra Leone and Liberia.
Missionaries from the Christian aid groups SIM USA and Samaritan's Purse have been working to help combat the world's worst outbreak of the disease.
Two of the relief workers contracted the disease and were being cared for at Emory University in Georgia.
UK trials of a vaccine for the Ebola virus began today - but some experts complain that the response has been a long time coming.
A Swansea doctor who took leave to treat Ebola patients in Africa, is back on the wards after three weeks in isolation.
The first British case of Ebola in the outbreak in West Africa has been confirmed. So how would repatriation work are what are the risks?