When Heather Cousins, a community health nurse from Woodstock, N.B., was recently on assignment with the Canadian Red Cross at an Ebola treatment centre in Sierra Leone, she and her co-workers let off steam by dancing and singing songs that pleaded for Ebola to “go away”. Today, their wish seems closer to being realized, as Sierra Leone has marked its first week of no new Ebola cases nationwide since the outbreak began nearly 15 months ago.