Ebola outbreak risk to US 'very low'

One US aid worker is being cared for in Atlanta while his colleague, also infected, is on her way from Liberia to the same specialist hospital.

Another man, in New York, is being tested after travelling to the region.

Since February, 887 people have died in four West African countries. The World Bank has given $200m (£120m) to help.

The Centers for Disease Control (CDC) in the US has received at least 100 calls from people questioning why the sick aid workers should be allowed into the country.

But Ms...