A volunteer doctor, who is treating people with Ebola in a Sierra Leone hospital, has told ITV News the West Africa epidemic is "one of the most significant infectious disease outbreaks ever".
Oliver Johnson, 28, told ITV News: "I think it [contracting Ebola] is on all of our minds here, that we've got to be careful.
"When you hear of the news of the American doctors in Liberia [who were infected]...obviously it's on our minds but that said I understand Ebola, I understand how it's transmitted and I've got the materials here...to stay safe."
As it reaches seven months since the Ebola outbreak started we take a look at the timeline of events leading up to the spread of the virus.
More than 100 British personnel are arriving in Sierra Leone to combat the Ebola outbreak in West Africa. Here's what else the UK is doing.
A man has been filmed helping an Ebola patient onto a plane without wearing any protective equipment.