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
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.