Ebola genome clarifies origins of West African outbreak
A single person infected with the virus probably sparked the epidemic
EBOLA EXPANSION West Africa is experiencing the largest Ebola outbreak ever recorded (map shows data as of August 19). A genetic analysis suggests that the virus causing the epidemic originated in Central Africa, where previous Ebola outbreaks have occurred. Source: S.K. Gire et al/Science 2014
redmal/iStockphoto, Adapted by E. Otwell