The Deadly Spread Of Ebola Mapped

The doctor who led Sierra Leone's fight against Ebola died of the disease on Tuesday, according to local authorities.

The death of Sheik Umar Khan, who was hailed as a national hero by Sierra Leone's health ministry, comes as more than 670 people in Guinea, Liberia and Sierra Leone have died of Ebola since it broke out in February.

Infographic by Jan Diehm for The Huffington Post. Earlier versions of this graphic were published in March and June. See more infographics here.