Health inspection and quarantine researchers work in their laboratory at an airport in Qingdao, Shandong province August 11, 2014.
The Ebola virus has killed 1,013 people and infected another 1,848, latest World Health Organisation data showed.
The fatalities include 52 deaths recorded between August 7-9 in three West African countries at the centre of the epidemic -- Guinea, Liberia and Sierra Leone -- according to the data released late Monday.
During the period, Guinea reported six additional deaths and 11 new infections, Liberia had 29 more deaths and 45 cases while Sierra Leone saw 17 new fatalities and 13 cases.