Oxfam: $1.9B in Ebola Aid Not Delivered by Donors

International donors have failed to deliver $1.9 billion in promised funds to help West African countries recover from the Ebola epidemic that killed more than 11,000 people and decimated already weak health care systems, the U.K.-based charity Oxfam said Sunday.

The remaining $3.9 billion pledged has been difficult to track because of "scant information" and a lack of transparency, the group said.

"We're finding it hard to understand which donors have given what money, to whom and for what purpose," said Aboubacry Tall, Oxfam's regional director for West Africa.