Number of Ebola cases 'could double every three weeks'
The number of Ebola cases in West Africa could double every three weeks, the World Health Organisation has warned.
The estimate comes as the UN health agency said the cost of containing the deadly virus has risen to nearly $1bn since it was identified in March.
The unprecedented Ebola outbreak is believed to have killed more than 2,400 people across West Africa, with Liberia, Sierra Leone and Guinea the hardest-hit countries.
US president Barack Obama is expected to announce later that the United States will be sending 3,000 American troops to help provide aid amid the crisis.
But Doctors Without Borders again said that the global response is “dangerously behind”.
Joanne Liu, president of the medical charity, said more countries need to stand up and provide aid soon.
