CienciaPR's editor, Mónica Feliú Mójer talked to Ernesto Ruiz Tiben about his crusade against this devastating disease, his motivations to fight GWD and help the poorest among the poor, the struggles and challenges of eradication, what lies in the future and the rewards of his magnificent public health and humanitarian labor. This article is part of CienciaPR's colaboration with El Nuevo Dia.