Neglected tropical diseases affect more than 1.5 billion people, close to one in six worldwide, yet they remain among the least visible and mediatized health problems on the planet. The medicines to treat most of them already exist, often for less than US$0.50 a dose. In this episode, host Hisham Allam speaks with Dr. Wendy Harrison, CEO of Unlimit Health, about why that arithmetic has not been enough, and what it will take to end diseases that feed on poverty and neglect....