The outbreak of the Ebola virus is "threatening everybody," according to the foreign minister of Sierra Leone.
Dr. Samura Kamara told ITV News: "We are hopeful this crisis will create a deeper momentum for the whole world to treat Ebola as a threat to humanity such as HIV and Aids."
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.