On a 2007 visit to Savelugu Hospital in Ghana, President Jimmy Carter asks a group of children if they've had Guinea worm. A raised hand is a yes.
Louise Gubb/Courtesy of the Carter Center
Nakal Longolio Acii, 9, had to stay several weeks at a Guinea worm clinic in Eastern Equatoria, South Sudan, while health workers coaxed the parasite out of her leg.
Louise Gubb/Courtesy of The Carter Center