The World Health Organisation moved to combat an "unprecedented outbreak" of the Ebola Virus in West Africa.
The Director-general of WHO Margaret Chan, said the disease was moving faster than efforts to control it after launching a $100 million response plan, adding "tough measures" will be needed to stop it.
ITV News correspondent Martha Fairlie reports
More than 160 staff will work in a UK-funded facility in Sierra Leone which is due to open in October.
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.