US doctor with Ebola dies in hospital

A doctor from Sierra Leone who was being treated at a US hospital for Ebola has died, the Nebraska Medical Centre says.

"We are extremely sorry to announce that the third patient we've cared for with the Ebola virus, Dr. Martin Salia, has passed away as a result of the advanced symptoms of the disease," said the hospital in a statement on Monday.

The hospital said it would "tentatively" schedule a press conference to brief reporters on the details.

Salia, a native of Sierra Leone and a US resident, was infected with the deadly haemorrhagic fever while treating patients in his home country.

He was flown to Nebraska for treatment on Saturday.

The hospital said late on Sunday that Salia was in a "extremely critical" condition and that doctors were doing everything they could to save him.

Salia was the 10th person with Ebola to be treated in the United States, and the second to have died from the infection.

In October, a Liberian man, Thomas Eric Duncan, died at a Texas hospital of the virus which has killed thousands of people in West Africa in history's largest ever outbreak.

The World Health Organisation said Friday that 5177 people are known to have died of Ebola across eight countries, out of a total 14,413 cases of infection, since December 2013.