London, Oct 18 : The World Health Organization has been accused of 'failure' in its response to the Ebola outbreak in West Africa, say reports.

According to an internal document, those involved failed to acknowledge 'fairly plain writing on the wall', reported the BBC.

Some sources close to the WHO reported about multiple failures in the Ebola epidemic's early stages.

The draft reports suggest that experts should have realized that traditional methods of curbing the outbreak would not be helpful in a region with porous borders and poor health systems.

The latest WHO figures say that death toll of Ebola outbreak has reached 4,546 and number of reported cases has gone up till 9,191 in the worst effected countries- Liberia, Guinea and Sierra Leone. (ANI)