"The leprosy epidemic is slowly but surely fading away," says WHO Director-General Dr Tedros Adhanom Ghebreyesus. The number of leprosy patients in the world once numbered in the millions, but new cases have declined to around 200,000 a year, thanks to the efforts of governments, the WHO, NGOs and organizations of persons affected by leprosy. Amid this changing landscape, Yohei Sasakawa has led various initiatives as the World Health Organization's Goodwill Ambassador for Leprosy Elimination, and as Chairman of The Nippon Foundation. Marking the twentieth anniversary of Mr Sasakawa's appointment as a leprosy elimination ambassador, this book recalls the initiatives he has promoted and led, and analyses their value and effectiveness, with a view to identifying lessons to be learned. The volume's expert contributors focus on five themes promoted and driven forward by Mr Sasakawa: Eliminating Leprosy as a Public Health Problem; Leprosy as a Human Rights Issue; the Establishment of the Rights of Primary Stakeholders; Expanding the Range of Awareness-Raising Activities and Developing New Partners; and Leprosy Control in the Post-Elimination Era. In synthesizing and assessing these efforts, A Global Impact offers an important contribution to the future elaboration of measures against leprosy, and infectious diseases generally.