The Ebola Outbreak’s Central Mystery: Where Did This Virus Come From?

The Ebola Outbreak’s Central Mystery: Where Did This Virus Come From?: Scientists believe that the Bundibugyo virus persists in an animal species, occasionally spilling over into humans. But they have yet to identify the species. By Carl Zimmer Since April, an outbreak of Ebola in the Democratic Republic of Congo has ballooned to 1,114 confirmed cases and 279 deaths, already the third-largest such epidemic since the disease was identified 50