Cellular immunity confers transient protection in experimental buruli ulcer following BCG or mycolactone-negative Mycobacterium ulcerans vaccination1313, Fraga, A.G., Martins T.G., Torrado E., Huygen K, Portaels F., Silva M.T., Castro A.G., and Pedrosa J. , PLoS ONE, 0/0/2012, Volume 7, Issue 3, p.e33406, (2012)