The 6 deadliest Ebola outbreaks in history
The worst Ebola outbreak in seven years has now killed 83 people in West Africa.
Nearly 40 more cases have been reported in Guinea and Liberia in what experts are calling an unprecedented epidemic.
Doctors Without Borders said the way the virus has spread is unlike any previous Ebola outbreaks, raising alarm among health workers.
First detected in 1976, the Ebola virus has killed an estimated 1,300 people in the years since.
Here are the six deadliest Ebola outbreaks in history, according to figures from the Centers for Disease Control and Prevention.
1. Democratic Republic of the Congo (then Zaire), 1976 (280 deaths)
2. Democratic Republic of the Congo, 1995 (250 deaths)
3. Uganda, 2000 (224 deaths)
4. Democratic Republic of the Congo, 2007 (187 deaths)
5. Sudan, 1976 (151 deaths)
6. Republic of Congo, 2003 (128 deaths)