President Obama has promised the US will do everything it can to help the West African nations where people have been struck down with the Ebola Virus.
More than 900 people have died after contracting the disease and the World Health Organisation the time may have come to try emergency experimental treatments.
ITV News Washington Correspondent Robert Moore 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.