The World Health Organization has organised a panel of medical ethicists to discuss the use of experimental drugs to treat the Ebola virus.
Currently, there is no registered medicine or vaccine against the virus, but several experimental options under development.
There are questions about whether medicine that has never been tested and shown to be safe in people should be used in the outbreak in West Africa.
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.