Experimental Ebola treatments are going to be trialled in two of the countries hardest hit by the disease in West Africa.

The medical charity Medecins Sans Frontiers will begin three separate trials of the treatment at its centres in Guinea and Liberia.

If the drugs work in the trial they will then be used more widely.

Professor Trudie Lang, from the University of Oxford, which is leading the trial of one of the drugs, said that despite the tight time frame, a clinical trial of the drug is essential.

“We need to have a treatment for Ebola and we need to know it works and it’s safe, and the only way we can do that is within the rigour of a clinical trial. So it’s going to be quite something to get it set up as quickly as we’re trying to do, within three months rather than 18, but it’s really important to be able to run a trial in this context,” Ms Lang said.

Liberia’s President Ellen Johnson Sirleaf has lifted the state of emergency in the country, but has warned that the battle against Ebola is not won. Although Ebola numbers are declining in Liberia, the President warned that the state of emergency has not been lifted “because the fight against Ebola is over,” she said.

The lifting of the state of emergency, the BBC reports, will see night curfews reduced, weekly markets can take place and preparations will begin for the re-opening of schools.