US evacuating two Americans sick with Ebola

Two Americans infected with Ebola in West Africa will be evacuated back to the United States in the coming days to be cared for in strict isolation, officials said Friday. Kent Brantly, a doctor who was treating Ebola patients in Liberia, and Christian missionary worker Nancy Writebol, are being flown home, but it was not immediately clear when they would arrive back in the US. Meanwhile US President Barack Obama said that delegates from Ebola-hit countries attending a US-Africa summit next week in Washington and who may have been exposed to the deadly virus would be screened before leaving their countries. The World Health Organization said the fast-moving outbreak was causing "catastrophic" loss of life in the affected countries of Guinea, Liberia, Nigeria and Sierra Leone.