World Health Organization is moving to downplay concerns about its ability to cope with Ebola patients in Sierra Leone.

New analysis has suggested a lack of available beds for Ebola patients in the western part of the country is hindering health official's ability to contain the spread of the deadly virus.

WHO assistant Director General Bruce Aylward says this is an issue they're moving to try to fix.

"The biggest area right now of escalating disease that's of greatest concern is what's happening in Sierra Leone where the amount of new diseases is still outstripping bed capacity for the moment, though that should catch-up quickly."

The United Nations has set a target of having 70 percent of all Ebola patients treated in isolation beds within 60 days.

The WHO says it expects to reach this target in the next few weeks in Sierra Leone, as a number of new facilities are being set up in the remote western regions of the country.

The Ebola outbreak in West Africa this year has left nearly 7 thousand people dead.