Njoroge Kamau, Health Advisor of Plan Kenya, Coast has contributed an article on CLTS to the June issue of Health Exchange which focuses on the social determinants of health, what they mean for health workers and how we put this approach into practice. The article describes how Plan Kenya and the Ministry of Public Health and Sanitation have used CLTS to successfully address the problems of low sanitation coverage, open defecation and their negative impacts on health. The article gives a good description of how the approach works, as well as its specific application in the Kenyan context.