A scientist has said the deadly Ebola virus is "unlikely to spread to Europe".
Professor Peter Piot, who helped discover the virus in the 1970s, said the likelihood the epidemic could spread in the UK was "very, very, very low".
This comes as border staff expressed concerns over what they should do if they suspected someone had Ebola.
"When someone is extremely ill - that is when they are very infectious, but at that stage patients can hardly move - they are not mobile," he said.
"Here, because of our infection control and standards in hospitals, I think that the likelihood that would give rise to an epidemic is very, very, very low."
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.
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