Citing feasible plans and disease control precautions, the Jiangsu provincial epidemic prevention agency is urging the public not to worry about the Ebola virus during the Nanjing Youth Olympic Games.

With 10 days before the Youth Olympics kick off in Nanjing, the number of international visitors has been surging, raising public concern that the crowds - particularly with people from Ebola-hit West Africa - could cause the virus to spread.

The latest WHO updates put the total cases at more than 1,600, including more than 880 deaths, in four countries: Guinea, Liberia, Nigeria and Sierra Leone.