Health Minister Rona Ambrose is urging Canadians in three countries in West Africa where the Ebola virus is raging to consider leaving now. The federal government issued a travel advisory Friday aimed at 216 Canadians who live in Guinea, Liberia, and Sierra Leone. "Today we are asking Canadians living in Sierra Leone, Guinea and Liberia to consider leaving by commercial means while they are still available," Ambrosa said in Edmonton Friday.