translate English to French: Ebola virus emerged in Africa at about this same time, just as Chronic Wasting Disease was spreading, undetected, among elk farms in the United States and Canada.
Le virus Ebola est apparu en Afrique environ au mÃªme moment, alors que se rÃ©pandait, sans Ãªtre dÃ©tectÃ©e, l'encÃ©phalopathie des cervidÃ©s dans les Ã©levages de wapitis aux Ã‰tats Unis et au Canada.