InPada tahun 1999, theInsiden world [[Incidence (epidemiology)|incidence]] ofpenyakit Hansen'sdiseasedunia wasdianggarkan estimated to besebanyak 640,000; anddan inpada 2000, 738,284 caseskes were identifieddikenalpasti. InPada tahun 1999, 108 cases occurred inberlaku thedi UnitedAmerika StatesSyarikat. In 2000, the [[World Health Organization]] (WHO) listed 91 countries in which Hansen's disease is endemic, with India, Myanmar, and Nepal having 70% of cases. In 2002, 763,917 new cases were detected worldwide, and in that year the WHO listed Brazil, Madagascar, Mozambique, Tanzania and Nepal as having 90% of Hansen's disease cases.
Seluruh dunia, 1-2 juta orang cacat kekal disebabkan kusta. Bagaimanapun, pesakit yang menerima rawatan antibiotik atau selesai menerima rawatan dianggap bebas dari jangkitan aktif.
