 He was Director of the Change Agent (for Health Sector Reform) Program in Nigeria (a sister program to PATHS I) funded by the Department for International Development (DFID), UK with the Federal Government of Nigeria from October 2001 to July 2003.Professor Lambo has published over sixty papers, articles and books in the areas of quantitative economics, modeling, operations research applied to health, strategic management, and health economics.In July 2003, Lambo was appointed Minister of Health of the Federal Republic of Nigeria, holding office until May 2007, making him the only economist appointed as Minister of Health in Nigeria to date and the second longest serving Minister of Health in Nigeria to date.