Atemthi D.Dau is a chemist and an epidemiologist with expertise and interest in the area of mental health and Addiction medicine, Drugs/Alcohol and Substance Abuse, public health education, chronic diseases prevention and management, refugee/migrant health. He has worked with a number of sectors, including government agencies, Private institutions, and the tertiary education sector in Australia, at National and State level. He is currently working in South Sudan Ministry of health as a public health epidemiologist/IDSR Focal Person, Public health Emergency Operation Centre (PHEOC) .