President Jimmy Carter, at a recent press conference discussing his cancer diagnosis and treatment, expressed his wish to outlive the last Guinea worm. The Carter Center, since 1986, has led a global effort to eradicate Guinea worm disease with great success and its goal is within reach. We spoke to Ernesto Ruiz-Tiben, director of The Carter Center’s Guinea Worm Eradication Program, about its efforts, the history behind it, and what lessons can be drawn in combating other public health threats throughout the world.