Previously, he served as a research assi stant professor in the Department of Epidemiology at the Gillings School of Global Public Health at the University of North Carolina at Chapel Hill (UNC). He began his professional career in Cameroon as a physician, and has worked on research programs in South Africa and in the Democratic Republic of Congo (DRC). From July 2009 to August 2013, he lived in the DRC, where he provided scientific leadership to the UNC-DRC team and advised the Ministry of Health and the President’s Emergency Plan for AIDS Relief country team on strategies to scale-up HIV prevention, care and treatment services, and improve TB control.