The death toll from the Ebola virus outbreak in West Africa has reached 887, that's according to the World Health Organisation (WHO).
The organisation's director-general, Margaret Chan, said: "If the situation continues to deteriorate, the consequences can be catastrophic in terms of lost lives, but also severe socio-economic disruption and a high risk of spread to other countries. This outbreak is moving faster than our efforts to control it."
And now the World Bank has pledged up to $200m in emergency funding to help fight the virus in West Africa. The African Development Bank has promised about $60m.
The money will be go to Guinea, Liberia and Sierra Leone - the three West African countries most affected.
But how should the money be used? And what are the challenges of containing the spread of this epidemic?
Presenter: Hazem Sika
Gregory Hartl - chief of public relations, World Health Organisation.
Dr. Iza Ciglenecki - emergency program manager, Doctors Without Borders.
Dr Ben Neuman - virologist and professor at the School of Biological Sciences, University of Reading.